An alternating power supply is connected to the primary coil of a step-down transformer.
Describe how this power supply causes a changing magnetic field to be set up in the transformer's iron core.
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Markscheme
13.2 Transformers and the National Grid Questions
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.