Cambridge IGCSE Physics practice

Paper 3 structured question: Magnetic effect of a current

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Paper

Marks

Topic

Magnetic effect of a current

Exam-style question

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Paper 3Theory (Core)4 marks

Understanding the application of magnetic effects in technology.

Description

Devices such as relays and loudspeakers utilize the magnetic effect of electric current for their operation.

a
Explain how a relay operates using the magnetic effect of an electric current.
Your answer
Aim for approximately 4 distinct marking points.
[4]

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Paper 3Theory (Core)1 marks

Description

Electric current flowing through a conductor generates a magnetic field. This principle is used in devices like relays and loudspeakers.

a
State one device that uses the magnetic effect of an electric current.
Your answer
Aim for approximately 1 distinct marking point.
[1]