Cambridge IGCSE Physics practice

Paper 4 structured question: Electromagnetic induction

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Paper

Marks

Topic

Electromagnetic induction

Exam-style question

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Paper 4Theory (Extended)1 marks

Induced e.m.f. in a coil of wire.

Description

A coil of wire is placed in a changing magnetic field. As the magnetic field strength increases, an e.m.f. is induced in the coil.

a
State the direction of the induced e.m.f. when the magnetic field strength is increasing.
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[1]

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Paper 4Theory (Extended)1 marks

Description

In a laboratory, a magnet is moved towards a coil of wire. The coil experiences an induced e.m.f. as the magnet approaches.

a
State what happens to the induced current as the magnet approaches the coil.
Your answer
Aim for approximately 1 distinct marking point.
[1]