36-Week WAEC Revision Programme — Physics
September to the May WAEC sitting. SS3 is not a year of new material so much as a year of pressure on material already met, so this is not a course to work through from the beginning — it is a testing programme. Each week you answer cold, work the ones you got wrong, and have the AI explain why you got them wrong. Anything you turn out never to have been taught, you learn there and then, and meet again three weeks later.
A week is one block of the syllabus and the prompts that cover it. You are not meant to do all of them: answer the questions first, and let what you get wrong decide which of the rest you need. Fifteen or twenty minutes a subject is a real week's work — nine subjects do not fit any other way.
Three prompts in each topic are free to try before you subscribe. One subscription opens everything this guide links to.
Every week, in this order
Start with the questions, not the explanation. The first two steps are in every week; a purpose-written mistake or pitfalls prompt appears in about half of them, and where it does not, your own wrong answers are the material for step three.
- 1. Retrieve — Answer cold, with nothing in front of you. Wrong answers are the point — they show you where the week's work is.
- 2. Drill — Work the ones you missed properly, showing every step, so you and the AI can both see where it went wrong.
- 3. Explain my error — Ask why your answer was wrong, not just what the right one is. Where the week offers a Spot My Mistake or WAEC Pitfalls prompt, use it.
- 4. Teach me — Only if the error turns out to be something you were never taught. Then come back and retrieve it again.
Mechanics
↑ Jump to week- Week 1
- Quiz: Time of flight, maximum height and range
- Quiz: Amplitude, period and frequency in SHM
- Practice set: Range and height problems at various angles
- WAEC prep: The angle giving maximum range and why
- Exam timing: A timed projectile problem set
- Spot my mistake: A solution that applies gravity to horizontal motion
- Let me explain: Why the trajectory is parabolic
- Real-life Nigeria: Projectile motion in a football kicked over a wall
- Physics at work: Ballistics and sports science
- Let me explain: The relationship between acceleration and displacement
- Teach me: The independence of horizontal and vertical motion
- Worked example: A projectile launched at an angle, worked fully
- Teach me: The conditions that define simple harmonic motion
- Week 2
- Quiz: Stress, strain and Young's modulus
- Practice set: SHM problems on springs and pendulums
- WAEC prep: Energy changes through one SHM cycle
- Exam timing: A timed SHM problem set
- Practice set: Extension and energy-stored problems
- WAEC prep: Energy stored in a stretched wire
- Exam timing: A timed elasticity problem set
- Spot my mistake: A solution that treats SHM acceleration as constant
- Spot my mistake: Applying Hooke's law beyond the elastic limit
- Real-life Nigeria: SHM in a vehicle suspension and a wall clock
- Physics at work: Vibration and structural engineering
- Let me explain: The force-extension graph and what each region shows
- Real-life Nigeria: Elasticity in building cables and vehicle springs
- Physics at work: Materials testing
- Worked example: The period of a simple pendulum from its length
- Teach me: Hooke's law and the elastic limit
- Worked example: Young's modulus calculated from experimental data
- Week 3
- Quiz: Atmospheric pressure and how it is measured
- Quiz: Moments and the principle of moments
- Practice set: Pressure and upthrust problems
- WAEC prep: Archimedes' principle and floating bodies
- Exam timing: A timed fluid pressure problem set
- Spot my mistake: A pressure calculation that ignores atmospheric pressure
- Let me explain: Pascal's principle and the hydraulic press
- Real-life Nigeria: Hydraulic jacks and water supply in Nigerian buildings
- Physics at work: Hydraulics and water engineering
- Let me explain: Resolving forces into components
- Teach me: Pressure in a liquid and how depth affects it
- Worked example: Force multiplication in a hydraulic system
- Teach me: The conditions for a body to be in equilibrium
- Week 4
- Quiz: The simple machines and what each achieves
- Practice set: Equilibrium problems with several forces
- WAEC prep: Centre of gravity and stability
- Exam timing: A timed equilibrium problem set
- Practice set: Inclined plane and lever problems
- WAEC prep: The wheel and axle and the screw jack
- Exam timing: A timed machines problem set
- Spot my mistake: A moment taken about the wrong point
- Spot my mistake: Confusing mechanical advantage with velocity ratio
- Real-life Nigeria: Equilibrium in a market scale and a loaded lorry
- Physics at work: Structural design
- Let me explain: Why no machine reaches one hundred per cent efficiency
- Real-life Nigeria: Pulleys and levers on a Nigerian building site
- Physics at work: Mechanical maintenance
- Worked example: A beam problem solved by taking moments
- Teach me: Mechanical advantage, velocity ratio and efficiency
- Worked example: Efficiency of a pulley system from given loads
Revisit from three weeks ago
Fields, Gravitation & Space
↑ Jump to week- Week 5
- Quiz: The field pattern of a solenoid and how it resembles a bar magnet
- Quiz: Fleming's left-hand rule and the direction of force
- Practice set: Flux density inside a solenoid from turns, length and current
- WAEC prep: Magnetic flux and flux linkage in a coil
- Exam timing: A timed run of magnetic field calculations
- Spot my mistake: A solution that confuses field strength with flux
- Let me explain: The right-hand grip rule and what it predicts
- Real-life Nigeria: The magnetic field in an electric bell and a relay
- Let me explain: The force on a moving charge in a magnetic field
- Teach me: The magnetic field around a straight current-carrying conductor
- Worked example: Calculating the flux density at a point near a long straight wire
- Teach me: The interaction of a magnetic field with a current-carrying conductor
Revisit from three weeks ago - Week 6
- Quiz: Uplink and downlink frequencies
- Practice set: The torque on a rectangular coil in a uniform field
- WAEC prep: The moving-coil galvanometer and how it is made to read
- Practice set: Orbital speed and height calculations
- WAEC prep: The advantages and limitations of satellite communication
- Spot my mistake: A solution using the wrong hand rule for an induced current
- Spot my mistake: Confusing a geostationary orbit with a polar one
- Real-life Nigeria: The electric motor as an application of the motor effect
- Let me explain: Why a geostationary orbit sits above the equator
- Real-life Nigeria: NigComSat and satellite services in Nigeria
- Worked example: Calculating the force on a conductor placed at an angle to a field
- Teach me: How a communication satellite relays a signal
- Worked example: The period of a satellite at a stated orbital radius
Revisit from three weeks ago - Week 7
- Quiz: Gravitational field strength and how it varies with distance
- Quiz: Convection currents and where they arise
- Practice set: Gravitational force and field problems
- WAEC prep: Weightlessness and why an orbiting body experiences it
- Exam timing: A timed gravitation problem set
- Spot my mistake: Confusing mass with weight in a gravitation problem
- Let me explain: Escape velocity and what it depends on
- Real-life Nigeria: Satellites over Nigeria and what they are used for
- Physics at work: Space science and satellite operations
- Let me explain: Radiation and the effect of surface colour
- Teach me: Newton's law of universal gravitation
- Worked example: The orbital speed of a satellite at a stated height
- Teach me: Conduction and the factors that affect its rate
Revisit from three weeks ago - Week 8
- Quiz: Newton's third law applied to rocket propulsion
- Practice set: Mixed problems on the three modes of transfer
- WAEC prep: The vacuum flask and how it limits all three modes
- Exam timing: A timed heat transfer problem set
- Practice set: Momentum problems for a rocket losing mass
- WAEC prep: Escape velocity and the stages of a launch
- Exam timing: A timed rocket motion problem set
- Spot my mistake: Explaining a convection effect as conduction
- Spot my mistake: The claim that a rocket pushes against the air
- Real-life Nigeria: Roofing materials and heat in Nigerian homes
- Physics at work: Building services and insulation
- Let me explain: Why a rocket works in the vacuum of space
- Real-life Nigeria: Nigeria's satellite launches and space agency work
- Physics at work: Aerospace engineering
- Worked example: A rate-of-heat-flow calculation through a slab
- Teach me: How a rocket accelerates by expelling mass
- Worked example: Thrust from a stated exhaust speed and mass flow rate
Revisit from three weeks ago
Heat & Thermodynamics
↑ Jump to week- Week 9
- Quiz: Specific latent heat of fusion and vaporisation
- Quiz: Charles' law and the pressure law
- Practice set: Heating curve problems with several stages
- WAEC prep: Determining specific heat capacity experimentally
- Exam timing: A timed calorimetry problem set
- Spot my mistake: A solution that omits the latent heat stage
- Let me explain: Why temperature stays constant during a change of state
- Real-life Nigeria: Cooling drinks with ice and evaporative clay pots
- Physics at work: Refrigeration and food processing
- Let me explain: The kinetic theory explanation of gas pressure
- Teach me: Heat capacity and specific heat capacity distinguished
- Worked example: A mixture problem solved by the method of mixtures
- Teach me: Boyle's law and its experimental basis
Revisit from three weeks ago
Waves, Sound & Light
↑ Jump to week- Week 10
- Quiz: Peak value, root-mean-square value and their relationship
- Quiz: Wavelength, frequency, period and speed
- Practice set: Problems on diffraction and interference
- WAEC prep: Stationary waves and how they form
- Exam timing: A timed wave properties problem set
- Spot my mistake: Confusing frequency with period in a wave calculation
- Let me explain: Why a.c. is described by an r.m.s. rather than an average value
- Let me explain: Reflection and refraction of waves at a boundary
- Real-life Nigeria: Wave behaviour at a Nigerian beach and in a harbour
- Physics at work: Acoustics and signal work
- Teach me: Alternating current and how it differs from direct current
- Teach me: Transverse and longitudinal waves compared
- Worked example: A wave equation calculation with unit care
Revisit from three weeks ago - Week 11
- Quiz: Real and apparent depth
- Quiz: The lens formula and the sign convention
- Practice set: Refractive index and critical angle problems
- WAEC prep: Dispersion of white light through a prism
- Exam timing: A timed refraction problem set
- Spot my mistake: Measuring an angle from the surface instead of the normal
- Let me explain: Total internal reflection and the critical angle
- Real-life Nigeria: Mirages and the apparent depth of a river
- Physics at work: Optical instrument work
- Let me explain: Constructing ray diagrams for a converging lens
- Teach me: The laws of refraction and refractive index
- Worked example: A refraction problem through a rectangular block
- Teach me: Converging and diverging lenses and their action
Revisit from three weeks ago - Week 12
- Quiz: Pitch, loudness and quality of a note
- Quiz: Total internal reflection as the basis of the fibre
- Practice set: Lens problems across object positions
- WAEC prep: The human eye and the correction of its defects
- Exam timing: A timed lens problem set
- Spot my mistake: A ray diagram drawn with rays that do not obey the rules
- Real-life Nigeria: Spectacles, cameras and projectors in daily use
- Physics at work: Optometry and imaging
- Let me explain: Resonance and the conditions for it
- Let me explain: The structure of a fibre: core, cladding and coating
- Worked example: Image position and magnification for a stated object distance
- Teach me: How sound is produced and transmitted
- Teach me: How light travels along an optical fibre
Revisit from three weeks ago - Week 13
- Quiz: Stimulated emission and population inversion
- Practice set: Problems on signal loss and fibre geometry
- WAEC prep: The advantages of fibre over copper cable
- Exam timing: A timed fibre optics problem set
- Practice set: Problems on laser output and photon count
- WAEC prep: The uses and hazards of lasers
- Exam timing: A timed laser problem set
- Spot my mistake: Assuming light bends round the fibre rather than reflecting
- Spot my mistake: Treating laser light as simply very bright light
- Real-life Nigeria: Fibre backbones carrying Nigerian internet traffic
- Physics at work: Telecommunications
- Let me explain: Coherence, monochromaticity and collimation
- Real-life Nigeria: Lasers in surgery, printing and barcode scanning
- Physics at work: Laser and photonics work
- Worked example: The critical angle from stated refractive indices
- Teach me: What makes laser light different from ordinary light
- Worked example: Photon energy of a laser of stated wavelength
Revisit from three weeks ago
Electricity & Magnetism
↑ Jump to week- Week 14
- Quiz: Capacitive reactance and how frequency changes it
- Practice set: A purely resistive a.c. circuit and the phase between V and I
- WAEC prep: Reading period and frequency from an a.c. waveform
- Practice set: Current and voltage in a series RLC circuit
- WAEC prep: Resonance in an RLC circuit and the resonant frequency
- Exam timing: A timed set of a.c. circuit calculations
- Spot my mistake: A calculation that uses peak current where r.m.s. was required
- Spot my mistake: Adding resistance and reactance arithmetically instead of vectorially
- Real-life Nigeria: Why Nigerian mains is quoted as 220 volts
- Let me explain: Phase relationships in an inductor and in a capacitor
- Real-life Nigeria: Tuning a radio receiver as an application of resonance
- Worked example: Finding peak voltage from a stated r.m.s. mains value
- Teach me: Inductive reactance and what it depends on
- Worked example: Impedance of a series RLC circuit from given values
Revisit from three weeks ago - Week 15
- Quiz: Ground state, excited state and ionisation
- Quiz: Recall of reactance and impedance formulae
- Quiz: Coulomb's law and the force between charges
- Practice set: Energy level diagrams and the transitions on them
- WAEC prep: Emission and absorption spectra compared
- Spot my mistake: A solution that uses the wrong sign for a transition energy
- Let me explain: How an electron transition produces a spectral line
- Real-life Nigeria: The sodium street lamp and the light it emits
- Let me explain: Choosing the right formula from the wording of a question
- Let me explain: Capacitance and what determines it
- Teach me: The idea that atomic energy is quantised
- Worked example: The energy of a photon emitted in a stated transition
- Teach me: The quantities an a.c. calculation asks you to track
- Teach me: Electric field strength and field patterns
Revisit from three weeks ago - Week 16
- Quiz: Ohm's law and ohmic against non-ohmic conductors
- Quiz: The kilowatt-hour and reading a meter
- Practice set: Capacitors in series and in parallel
- WAEC prep: The parallel plate capacitor and the effect of a dielectric
- Exam timing: A timed capacitor problem set
- Spot my mistake: Combining capacitors with the resistor rules
- Real-life Nigeria: Capacitors in fans, inverters and camera flashes
- Physics at work: Electrical design
- Let me explain: Resistivity and the factors that determine resistance
- Let me explain: Power dissipation and why cables warm
- Worked example: Energy stored in a charged capacitor
- Teach me: Current, charge and the drift of electrons
- Teach me: Electrical energy, power and their units
Revisit from three weeks ago - Week 17
- Quiz: Electrolytes, electrodes and the products at each
- Practice set: Power and energy problems across appliances
- WAEC prep: Fuses and the rating of household circuits
- Exam timing: A timed energy and power problem set
- Practice set: Electrolysis calculations across different cells
- WAEC prep: Electroplating and the purification of copper
- Exam timing: A timed electrolysis problem set
- Spot my mistake: An energy bill calculation left in watt-seconds
- Spot my mistake: A Faraday calculation with the wrong valency
- Real-life Nigeria: Estimating a Nigerian household's monthly bill
- Physics at work: Energy auditing
- Let me explain: Faraday's laws of electrolysis
- Real-life Nigeria: Electroplating in Nigerian metal workshops
- Physics at work: Electrochemical industry
- Worked example: The cost of running an appliance for a stated period
- Teach me: Electrolysis and the movement of ions
- Worked example: The mass deposited from a stated current and time
Revisit from three weeks ago - Week 18
- Quiz: Lenz's law and the direction of induced current
- Quiz: Magnetic domains and how magnetisation occurs
- Practice set: Induced e.m.f. problems for moving conductors
- WAEC prep: Transformer energy losses and how they are reduced
- Exam timing: A timed induction problem set
- Spot my mistake: A transformer calculation with the ratio inverted
- Let me explain: Self and mutual inductance
- Real-life Nigeria: Step-down transformers on Nigerian distribution poles
- Physics at work: Power transmission
- Let me explain: The hysteresis loop and what its area represents
- Teach me: Faraday's law of electromagnetic induction
- Worked example: Turns ratio and output voltage of a transformer
- Teach me: Ferromagnetic, paramagnetic and diamagnetic materials
Revisit from three weeks ago - Week 19
- Quiz: Conduction through a gas at reduced pressure
- Practice set: Problems on magnetisation and demagnetisation
- WAEC prep: Soft and hard magnetic materials and their uses
- Exam timing: A timed magnetic materials set
- Practice set: Problems on conduction in electrolytes
- WAEC prep: The cathode ray and its properties
- Exam timing: A timed conduction problem set
- Spot my mistake: Choosing a hard magnetic material for a transformer core
- Spot my mistake: Confusing electron flow with conventional current
- Real-life Nigeria: Magnets in loudspeakers and electric generators
- Physics at work: Electrical machine manufacture
- Let me explain: The discharge tube and the effect of pressure
- Real-life Nigeria: Neon signs and fluorescent tubes
- Physics at work: Lighting technology
- Worked example: Choosing a core material from hysteresis data
- Teach me: Conduction of electricity through a liquid
- Worked example: Identifying products at each electrode in a stated cell
Revisit from three weeks ago
Electronics & Modern Physics
↑ Jump to week- Week 20
- Quiz: Threshold frequency and work function
- Quiz: De Broglie's hypothesis and the matter wave
- Practice set: Maximum kinetic energy of emitted electrons
- WAEC prep: The stopping potential and how it is measured
- Spot my mistake: A solution that treats light purely as a wave here
- Let me explain: Why increasing intensity does not increase photoelectron energy
- Real-life Nigeria: Photocells in automatic doors and light meters
- Let me explain: Why a cricket ball shows no observable wave behaviour
- Teach me: The photoelectric effect and what is observed
- Worked example: Einstein's photoelectric equation applied to given data
- Teach me: The wave-particle duality of light
Revisit from three weeks ago - Week 21
- Quiz: Intrinsic and extrinsic semiconductors
- Practice set: Comparing de Broglie wavelengths of different particles
- WAEC prep: Electron diffraction as evidence for matter waves
- Practice set: Identifying components in a simple circuit diagram
- WAEC prep: The p-n junction and the depletion region
- Spot my mistake: A calculation using the wrong mass in the de Broglie formula
- Spot my mistake: A circuit drawn with a diode the wrong way round
- Real-life Nigeria: The electron microscope and why it outresolves a light one
- Physics at work: Wave-particle duality
- Let me explain: N-type and p-type doping
- Real-life Nigeria: Electronics in Nigerian phone repair workshops
- Worked example: The de Broglie wavelength of an electron at a stated speed
- Teach me: Conductors, insulators and semiconductors compared
- Worked example: Reading a resistor colour code and checking it
Revisit from three weeks ago - Week 22
- Quiz: Rapid recall across a.c. circuits
- Quiz: The electron gun and the deflecting plates
- Practice set: A mixed problem set spanning fields, a.c. circuits and quantisation
- WAEC prep: A half-paper drawn from the magnetic field and a.c. topics
- Exam timing: A timed mixed paper on fields, circuits and quantum topics
- Spot my mistake: The errors that recur across field and circuit calculations
- Let me explain: The link between energy quantisation and the photoelectric effect
- Real-life Nigeria: Where this term's physics shows up in Nigerian technology
- Let me explain: How the time base produces a trace
- Teach me: Pulling the magnetic field topics into one picture
- Worked example: A mixed calculation spanning fields and circuits
- Teach me: The structure of a cathode ray oscilloscope
Revisit from three weeks ago - Week 23
- Quiz: Half-wave and full-wave rectification
- Practice set: Reading peak voltage from a CRO screen
- WAEC prep: The uses of the CRO in measurement
- Practice set: Sketching output waveforms for rectifier circuits
- WAEC prep: The transistor as a switch
- Spot my mistake: Misreading a trace by ignoring the volts-per-division setting
- Spot my mistake: A rectifier circuit drawn with a diode reversed
- Real-life Nigeria: The CRO in a Nigerian electronics workshop
- Let me explain: The transistor as a current amplifier
- Real-life Nigeria: Rectifiers in phone chargers and inverters
- Worked example: Finding frequency from a trace and the time-base setting
- Teach me: The diode and its forward and reverse characteristics
- Worked example: Current gain of a transistor from given base and collector currents
Revisit from three weeks ago - Week 24
- Quiz: NAND and NOR gates and their truth tables
- Quiz: The factors affecting the rate of emission
- Practice set: Completing truth tables for given circuits
- WAEC prep: The XOR gate and where it is used
- Spot my mistake: A truth table filled in for the wrong gate
- Let me explain: Building a truth table for a two-gate combination
- Real-life Nigeria: Logic gates inside a calculator and a digital meter
- Physics at work: Digital electronics
- Let me explain: How electrons are accelerated and focused in a tube
- Teach me: The AND, OR and NOT gates and their symbols
- Worked example: Simplifying a simple logic expression
- Teach me: Thermionic emission and the conditions for it
Revisit from three weeks ago - Week 25
- Quiz: Nuclear fusion and the conditions it demands
- Practice set: Electron speed from accelerating potential
- WAEC prep: The deflection of an electron beam by electric and magnetic fields
- Practice set: Balancing nuclear equations for fission and fusion
- WAEC prep: The differences between fission and fusion
- Spot my mistake: Confusing thermionic emission with photoelectric emission
- Spot my mistake: A nuclear equation that does not balance
- Real-life Nigeria: The cathode ray tube in older television sets
- Let me explain: Mass defect and binding energy
- Real-life Nigeria: Nuclear power and the debate about it in Nigeria
- Worked example: The kinetic energy gained across a stated accelerating voltage
- Teach me: Nuclear fission and the chain reaction
- Worked example: Energy released from a stated mass defect
Revisit from three weeks ago - Week 26
- Quiz: The properties of X-rays
- Quiz: Identifying components from their symbols
- Practice set: X-ray intensity and penetrating power problems
- WAEC prep: The uses and dangers of X-rays
- Spot my mistake: Confusing X-ray intensity with X-ray quality
- Let me explain: Hard and soft X-rays and what determines each
- Real-life Nigeria: X-rays in Nigerian hospitals and airport security
- Physics at work: X-ray technology
- Let me explain: Series and parallel wiring on a breadboard
- Teach me: How X-rays are produced in an X-ray tube
- Worked example: The minimum wavelength from a stated tube voltage
- Teach me: Reading a circuit diagram and building from it
Revisit from three weeks ago - Week 27
- Quiz: Solar, wind and hydro as renewable sources
- Practice set: Fault-finding in a circuit that will not work
- WAEC prep: Practical circuit questions in the WAEC paper
- Practice set: A mixed problem set spanning electronics, nuclear physics and X-rays
- WAEC prep: A half-paper drawn from the electronics and nuclear topics
- Exam timing: A timed mixed paper on electronics, nuclear physics and energy sources
- Spot my mistake: A wiring error that shorts a component
- Spot my mistake: The errors that recur in electronics and nuclear calculations
- Real-life Nigeria: Building a simple power supply from local parts
- Let me explain: Energy conversion efficiency and where losses go
- Worked example: Tracing current through a built circuit
- Teach me: Renewable and non-renewable sources distinguished
- Worked example: A mixed calculation spanning electronics and nuclear physics
Revisit from three weeks ago
Applications & Careers
↑ Jump to week- Week 28
- Quiz: The qualifications each physics career path requires
- Practice set: A graded set of a.c. calculations
- WAEC prep: Past-question style a.c. problems
- Exam timing: A timed a.c. calculation drill
- Practice set: Comparing the energy output of different sources
- WAEC prep: The advantages and drawbacks of each source
- Spot my mistake: The commonest slips in a.c. arithmetic
- Spot my mistake: Treating an energy source as renewable when it is not
- Real-life Nigeria: Solar power in Nigerian homes and the national grid
- Physics at work: Renewable energy
- Let me explain: What a medical physicist actually does
- Worked example: A full RLC calculation worked line by line
- Worked example: The output of a solar panel of stated area and efficiency
- Teach me: The branches of engineering open to a physics student
Revisit from three weeks ago - Week 29
- Quiz: Deriving the dimensions of a compound quantity
- Practice set: Matching Nigerian industries to the physics they rely on
- WAEC prep: Physics subject combinations for university admission
- Practice set: Dimensional problems across mechanics quantities
- WAEC prep: Using dimensions to spot a wrong formula
- Exam timing: A timed dimensional analysis set
- Spot my mistake: The subject combinations an engineering course in Nigeria requires
- Spot my mistake: A dimensional check that overlooks a dimensionless constant
- Real-life Nigeria: Physics graduates in Nigerian oil, power and telecoms
- Physics at work: A career in engineering
- Let me explain: Checking an equation for dimensional consistency
- Real-life Nigeria: Unit checking before trusting a calculation
- Physics at work: Engineering calculation and quality control
- Worked example: Tracing a physics principle into an engineering job
- Teach me: Base quantities and their dimensions
- Worked example: Finding the dimensions of a constant in a given equation
Revisit from three weeks ago
Mixed WAEC Practice
↑ Jump to week- Week 30
- Quiz: Zero error and how it is corrected
- Practice set: Recording readings to the right number of decimal places
- WAEC prep: Drawing up a results table in the practical paper
- Spot my mistake: A results table with inconsistent significant figures
- Let me explain: The thread running from thermionic emission to the CRO
- Let me explain: Random and systematic errors distinguished
- Real-life Nigeria: Measurement accuracy in a Nigerian workshop
- Let me explain: Finding the focal length of a converging lens
- Teach me: Drawing the electronics topics together
- Teach me: Reading a vernier calliper and a micrometer screw gauge
- Worked example: Calculating percentage error from repeated readings
- Teach me: The simple pendulum experiment and what it determines
Revisit from three weeks ago - Week 31
- Quiz: Newton's three laws and their consequences
- Practice set: The refractive index experiment using a glass block
- WAEC prep: Stating precautions in an optics practical
- Exam timing: A timed practical write-up under exam conditions
- Practice set: Mixed mechanics problems on force and energy
- WAEC prep: Past-question mechanics problems
- Exam timing: A timed mechanics section
- Spot my mistake: A graph plotted with an unsuitable scale
- Spot my mistake: A momentum solution that ignores direction
- Real-life Nigeria: Why precautions matter in a crowded Nigerian laboratory
- Let me explain: Conservation of momentum in a collision
- Worked example: Plotting a graph and taking a gradient from it
- Teach me: The equations of motion and when each applies
- Worked example: A projectile problem worked from first principles
Revisit from three weeks ago - Week 32
- Quiz: Latent heat of fusion and of vaporisation
- Quiz: Reflection, refraction, diffraction and interference
- Practice set: Mixed problems on expansion and heat transfer
- WAEC prep: Past-question heat problems
- Exam timing: A timed heat and thermodynamics section
- Practice set: Mixed problems on waves and optics
- WAEC prep: Past-question wave and optics problems
- Exam timing: A timed waves and optics section
- Spot my mistake: A calorimetry solution that omits the container
- Spot my mistake: A lens calculation with the wrong sign convention
- Let me explain: The gas laws combined into the equation of state
- Let me explain: The laws of refraction and critical angle
- Real-life Nigeria: Echo and reverberation in a Nigerian hall
- Teach me: Heat capacity and specific heat capacity
- Worked example: A calorimetry problem including a change of state
- Teach me: The wave equation and the quantities in it
- Worked example: A lens formula problem with sign convention
Revisit from three weeks ago - Week 33
- Quiz: Electrical energy, power and cost of consumption
- Quiz: Alpha, beta and gamma radiation compared
- Practice set: Mixed problems on circuits and induction
- WAEC prep: Past-question electricity problems
- Exam timing: A timed electricity and magnetism section
- Practice set: Mixed problems on nuclear equations and decay
- WAEC prep: Past-question modern physics problems
- Exam timing: A timed modern physics section
- Spot my mistake: A parallel resistance found by adding instead of reciprocals
- Spot my mistake: A decay equation with the mass number unbalanced
- Let me explain: Electromagnetic induction and Lenz's law
- Let me explain: Half-life and radioactive decay
- Teach me: Ohm's law and resistors in series and parallel
- Worked example: A circuit problem with combined series and parallel sections
- Teach me: The structure of the atom and nuclear notation
- Worked example: A half-life calculation over several periods
Revisit from three weeks ago - Week 34
- Quiz: Rapid recall of the formulae most often examined
- Quiz: A rapid sweep across every examined strand
- Practice set: A graded set of the calculations WAEC repeats
- WAEC prep: The calculation styles that appear most often in past papers
- Exam timing: A timed calculation drill
- Spot my mistake: An answer quoted without units or to absurd precision
- Let me explain: Rearranging a formula safely before substituting
- Real-life Nigeria: Estimating whether an answer is physically reasonable
- Let me explain: How the WAEC physics papers are structured and marked
- Teach me: Recognising which formula a question is asking for
- Worked example: A multi-step calculation carried through with units
- Teach me: Building a revision timetable for the final run-in
Revisit from three weeks ago - Week 35
- Quiz: Rapid recall across nuclear physics
- Practice set: A complete mixed paper under relaxed conditions
- WAEC prep: The topics that carry the most marks
- Practice set: Combined gas law problems
- WAEC prep: Absolute zero and the Kelvin scale
- Exam timing: A timed gas laws problem set
- Spot my mistake: The presentation faults that cost marks in every paper
- Spot my mistake: A gas law calculation left in degrees Celsius
- Exam timing: A full paper under strict exam timing
- Real-life Nigeria: Gas cylinders and tyre pressure in Nigerian conditions
- Physics at work: Gas handling and process engineering
- Worked example: A full past-paper question worked to examiner standard
- Worked example: A general gas equation problem with unit conversion
Revisit from three weeks ago - Week 36
- Quiz: The resonance tube experiment for the speed of sound
- Practice set: Problems on vibrating strings and air columns
- WAEC prep: Echo, reverberation and the measurement of distance
- Exam timing: A timed sound problem set
- Practice set: Series and parallel resistance problems
- WAEC prep: The potentiometer and the metre bridge
- Exam timing: A timed resistance problem set
- Spot my mistake: An echo calculation that forgets the return journey
- Spot my mistake: A resistivity calculation using diameter instead of radius
- Real-life Nigeria: Acoustics in a Nigerian church or mosque hall
- Physics at work: Sound engineering
- Real-life Nigeria: Cable sizing in Nigerian house wiring
- Physics at work: Electrical installation
- Worked example: The speed of sound from a resonance tube experiment
- Worked example: Resistance of a wire from its dimensions and resistivity
Revisit from three weeks ago