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Simple phenomena of magnetism

Simple phenomena of magnetism

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Question 10

An electrical device uses an electromagnet that must be switched on and off rapidly many times each second.

Which material is most suitable for the core of this electromagnet, and why?

A

Soft iron, because it is easily magnetized and demagnetized.

B

Soft iron, because it retains its magnetism when the current is switched off.

C

Steel, because it is easily magnetized and demagnetized.

D

Steel, because it retains its magnetism when the current is switched off.

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Simple phenomena of magnetism Questions

  1. IGCSE
  2. /Physics
  3. /Simple phenomena of magnetism

169 exam-style questions on CIE IGCSE Physics Simple phenomena of magnetism, covering Simple phenomena of magnetism. Each one has a worked solution and a mark scheme showing where the marks go.

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