Electromagnetism questions | form four Physics

State the laws of electromagnetic induction.

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Mention two advantages of a.c. generators over d.c. generators.

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Briefly explain why the core of a transformer is made of thin layers of metal insulated from one another.

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Describe the structure of a step-up transformer and state how it works.

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A transformer with 4800 turns in the primary coil is designed to work form 240 V a.c. mains to give a supply of 8 V in order to ring a bell.
(i) What would happen if the transformer were connected to a 240 V d.c. mains?
(ii) Briefly explain why the primary current increases when a bell is being rung?

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UNSOLVED