A student is investigating how transformers work. They set up a step-down transformer connected to an alternating current (a.c.) power supply.
Explain how an alternating current in the primary coil induces an alternating current in the secondary coil of the transformer.
28 exam-style questions on Edexcel GCSE Physics 13.2 Transformers and the National Grid. Each one has a worked solution and a mark scheme showing where the marks go.