Electricity and magnetism
Practise electric and magnetic fields, charged-particle motion and induction.
Subtopics
Coulomb forces and vector addition
Calculate electrostatic forces and combine perpendicular or opposing contributions.
Not attempted8 questionsElectric fields, superposition and conductors
Translate between field, force and field-line diagrams, including conductor shielding.
Not attempted8 questionsPotential difference, energy and electronvolts
Relate voltage, electric potential energy and kinetic-energy gain.
Not attempted8 questionsAcceleration parallel to an electric field
Combine electric force, constant acceleration and energy methods for particle beams.
Not attempted8 questionsTransverse electric deflection
Use independent components to calculate a charged particle’s path through uniform plates.
Not attempted8 questionsMagnetic field patterns and right-hand rules
Recognise fields around magnets, wires, current loops and solenoids.
Not attempted8 questionsFields of straight wires and superposition
Calculate inverse-distance magnetic fields and combine wire contributions.
Not attempted8 questionsMagnetic forces on charges and currents
Calculate force magnitudes and determine directions for moving charges and conductors.
Not attempted8 questionsCircular charged-particle paths and cyclotrons
Link magnetic bending, charge-to-mass ratio and repeated electric acceleration.
Not attempted8 questionsMagnetic flux and Faraday’s law
Calculate flux and induced emf from rates of flux change.
Not attempted8 questionsLenz’s law, eddy currents and generators
Determine induced-current directions and connect flux change to alternating output.
Not attempted8 questionsTransformers and power transmission
Use turn ratios and power balances to calculate voltage, current and line losses.
Not attempted8 questions