Fifth lesson of the ‘Electromagnetic induction’ topic for the second year of the AQA A-Level Physics course. Covers the purpose of transformers, energy changes in a transformer and transformer efficiency. Fully resourced and with practice exam questions (with worked answers).

Fourth lesson of the ‘Electromagnetic induction’ topic for the second year of the AQA A-Level Physics course. Covers what an alternating current is, rms values and power supplied by an alternating current. Fully resourced and with practice exam questions (with worked answers).

Third lesson of the ‘Electromagnetic induction’ topic for the second year of the AQA A-Level Physics course. Covers features of the output voltage waveform, why the output alternates and why ‘practical’ generators have fixed coils and a rotating (electro)magnet. Fully resourced and with practice exam questions (with worked answers).

Second lesson of the ‘Electromagnetic induction’ topic for the second year of the AQA A-Level Physics course. Covers magnetic flux and magnetic flux linkage, Lenz’s law and the conservation that explains it. Fully resourced and with practice exam questions (with worked answers).

First lesson of the ‘Electromagnetic induction’ topic for the second year of the AQA A-Level Physics course. Covers what must happen to a conductor for electricity to be generated, factors that cause induced emf to increase and whether an induced emf always causes a current to flow . Fully resourced and with practice exam questions (with worked answers).

Third lesson of the ‘magnetic fields’ topic for the second year of the AQA A-Level Physics course. Covers what happens when electrons are deflected by a magnetic field, why moving charges move in a circular path and the factors that affect radius of this circular path. Fully resourced and with practice exam questions (with worked answers).

Second lesson of the ‘magnetic fields’ topic for the second year of the AQA A-Level Physics course. Covers what happens to charged particles in a magetic field; why a force acts on a current-carrying wire in a magnetic field. Fully resourced and with practice exam questions (with worked answers).

First lesson of the ‘magnetic fields’ topic for the second year of the AQA A-Level Physics course. Covers measuring strength of a magnetic field, factors affecting the magnitude of the force and showing force direction. Fully resourced and with practice exam questions (with worked answers).

Fifth lesson of the ‘Capacitors’ topic for the second year of the AQA A-Level Physics course. Covers how capacitance/charge vary based on capacitors being in series or parallel. Fully resourced and with practice exam questions (with worked answers).

Fourth lesson of the ‘Capacitors’ topic for the second year of the AQA A-Level Physics course. Covers how a dielectric affects a capacitor, relative permittivity and dielectric constant. Fully resourced and with practice exam questions (with worked answers).

Third lesson of the ‘Capacitors’ topic for the second year of the AQA A-Level Physics course. Covers shape of Q-t charging and discharging curves and the time constant. Fully resourced and with practice exam questions (with worked answers).

Second lesson of the ‘Capacitors’ topic for the second year of the AQA A-Level Physics course. Covers why a capacitor stores energy while charging and how energy changes if charge doubles. Fully resourced and with practice exam questions (with worked answers).

First lesson of the ‘Capacitors’ topic for the second year of the AQA A-Level Physics course. Covers how capacitors charge up and shows how pd across the plates relates to the charge on the plates. Fully resourced and with practice exam questions (with worked answers).

Final part of the ‘Electric fields’ topic for the second year of the AQA A-Level Physics course. This is not a whole lesson, but simply a comparison table to highlight the similarities and differences between electric fields and gravitational fields.

Fifth lesson of the ‘Electric fields’ topic for the second year of the AQA A-Level Physics course. Covers more work on electric field strength and radial fields. Fully resourced and with practice exam questions (with worked answers).

Fourth lesson of the ‘Electric fields’ topic for the second year of the AQA A-Level Physics course. Covers force between two point charges, force between two charged objects and explaining what the sign of the force (+ or -) indicates. Fully resourced and with practice exam questions (with worked answers).

Third lesson of the ‘Electric fields’ topic for the second year of the AQA A-Level Physics course. Covers defining electric potential, electric potential between two points, finding change in electric potential energy from pd. Fully resourced and with practice exam questions (with worked answers).