Physics path · GCSE Physics

Why must a transformer’s core field keep changing?

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Practice question

An outdoor pond light is supplied through a transformer. The transformer has separate primary and secondary coils wound on an iron core, and the primary coil is connected to an alternating-current supply. Explain how a potential difference is induced across the secondary coil.

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Official curriculum

4.7.3.4 Transformer induction with alternating and direct current

This challenge practises knowledge and exam skills from the official GCSE science curriculum. Use these sources to see the exact subject content and its wider Key Stage 4 context.

AQA specification 4.7.3.4 Transformer induction with alternating and direct current GOV.UK Key Stage 4 science programme

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