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Uses of magnetism

An industrial step-down transformer is used to supply power from an electric utility line to an electric vehicle (EV) fleet charging station.

The parameters of the transformer are shown in the table below:

Parameter	Value
Potential difference across primary coil	$V11\,000\text{ V}$
Current in secondary coil	$A625\text{ A}$
Potential difference across secondary coil	$V440\text{ V}$

Assuming the transformer is $100%100\%$ efficient, calculate the current drawn by the primary coil of the transformer.

[3]

Uses of magnetism Questions

16 exam-style questions on OCR GCSE Physics Uses of magnetism. Each one has a worked solution and a mark scheme showing where the marks go.

Uses of magnetism

Question bank

An industrial step-down transformer is used to supply power from an electric utility line to an electric vehicle (EV) fleet charging station.

The parameters of the transformer are shown in the table below:

Parameter	Value
Potential difference across primary coil	$V11\,000\text{ V}$
Current in secondary coil	$A625\text{ A}$
Potential difference across secondary coil	$V440\text{ V}$

Assuming the transformer is $100%100\%$ efficient, calculate the current drawn by the primary coil of the transformer.

[3]

16 exam-style questions on OCR GCSE Physics Uses of magnetism. Each one has a worked solution and a mark scheme showing where the marks go.