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O-LevelPhysicsMagnetism5054/12 · Oct/Nov 2014 · Q211 Mark

The diagram shows a 12V d.c. power supply connected across a coil with a metal core.. The core becomes a magnet when the current is switched on. It remains a magnet after the current is switched off. From which metal is the core made?

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Aaluminium

Bcopper

Csoft iron

Dsteel

✓ Correct answer

D: steel

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About this question

Topic: Magnetism, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2014 Paper 1 Variant 2, question 21.

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