GCSE Physics Revision: Power of appliances Freesciencelessons 2 GCSE Physics Revision: Current used by appliances Freesciencelessons 3 GCSE Physics Revision: Direct current and alternating current Freesciencelessons 4 GCSE Physics Revision: Wiring a 3-pin plug Freesciencelessons 5 GCSE Physics Revision: Fuses and Earth Freesciencelessons 6 GCSE Physics Revision: Residual current circuit breakers