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O-LevelPhysicsMagnetism5054/11 · May/June 2018 · Q271 Mark

The diagram shows an alarm system. What happens when battery P is disconnected?

Diagram for this question, from the exam paper

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Airon armature: falls, bell: rings

Biron armature: falls, bell: stops ringing

Ciron armature: moves up, bell: rings

Diron armature: moves up, bell: stops ringing

✓ Correct answer

A: iron armature: falls, bell: rings

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About this question

Topic: Magnetism, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2018 Paper 1 Variant 1, question 27.

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