GCSE Physics
Electricity and magnetism
revision.
Play this section Circuits, resistance, power, the national grid, magnets, motors and induced potential.
Electricity and magnetism guides
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Students type: static electricity friction electrons GCSE
Open guide Revision guideElectromagnetic inductionStudents type: electromagnetic induction GCSE Physics
Open guide Revision guideThe motor effectStudents type: Fleming left hand rule motor effect GCSE
Open guide Revision guideElectromagnetsStudents type: electromagnet solenoid iron core GCSE
Open guide Revision guideMagnetic fieldsStudents type: magnetic field lines north to south GCSE
Open guide Revision guideMains electricityStudents type: live neutral earth fuse GCSE Physics
Open guide Revision guideElectrical powerStudents type: electrical power P = VI I²R GCSE
Open guide Revision guideI–V characteristicsStudents type: I–V characteristics lamp diode resistor GCSE
Open guide Revision guideSeries and parallel circuitsStudents type: series vs parallel circuits GCSE Physics
Open guide Revision guideCurrent, voltage and resistanceStudents type: current potential difference resistance GCSE Physics
Open guide Revision guideMagnetism and electromagnetismStudents type: Fleming left hand rule motor effect
Open guide Revision guideElectricityStudents type: series vs parallel circuits GCSE
Open guideElectricity
The flagship circuits page: current, potential difference, resistance, series and parallel, I–V characteristics, power and the national grid.
Magnetism and electromagnetism
Magnetic fields, electromagnets, the motor effect, Fleming’s left-hand rule, induced potential and transformers on Physics routes.
Current, voltage and resistance
Teacher-written GCSE Physics revision on current, potential difference and resistance: I = Q/t, V = E/Q, R = V/I, Ohm’s law at constant temperature, and the units ampere, volt and ohm.
Series and parallel circuits
Teacher-written GCSE Physics revision on series and parallel circuits: current the same in series, potential difference the same in parallel, adding resistances, and why household lamps are in parallel.
I–V characteristics
Teacher-written GCSE Physics revision on I–V characteristics: ohmic resistors, filament lamps, diodes, thermistors and LDRs, with the required practical wiring and what a curved graph says about resistance.
Electrical power
Teacher-written GCSE Physics revision on electrical power: P = VI, P = I²R and P = V²/R, energy E = Pt = VIt, and how heating in cables links power to the national grid.
Mains electricity
Teacher-written GCSE Physics revision on mains electricity: 230 V a.c. at 50 Hz, live, neutral and earth, fuses and circuit breakers, the national grid, and why transformers need alternating current.
Magnetic fields
Teacher-written GCSE Physics revision on magnetic fields: north and south poles, field lines from north to south, plotting compasses, the Earth’s field, and the field around a current-carrying wire.
Electromagnets
Teacher-written GCSE Physics revision on electromagnets: the solenoid field, iron cores, how current and turns change strength, and uses in scrapyard cranes, relays and circuit breakers.
The motor effect
Teacher-written GCSE Physics revision on the motor effect: a current at right angles to a magnetic field feels a force, F = BIl on Higher, Fleming’s left-hand rule, and how a d.c. motor keeps turning.
Electromagnetic induction
Teacher-written GCSE Physics revision on electromagnetic induction: induced potential, generators, transformers and V₁/V₂ = n₁/n₂ — fuller on Triple / Physics than Combined.
Static electricity
Teacher-written GCSE Physics revision on static charge: friction, electron transfer, electrostatic forces, electric fields, uses such as photocopiers, and dangers near fuels.
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More GCSE Physics
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Teacher-written GCSE Physics revision for Combined and Triple Science: energy stores, electricity, particle model, radioactivity, forces, motion, waves and space.
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