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7.2 The motor effect

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Question 7

Current flows through a solenoid in an automatic greenhouse vent. The designer wants to convert the solenoid into an electromagnet.

Which describes the required change?

[1]
A

Place a second current-carrying solenoid beside the first solenoid.

B

Reverse the current so the solenoid's field changes direction.

C

Fit an iron rod through the centre of the solenoid.

D

Replace the solenoid with one straight current-carrying wire.

Markscheme

7.2 The motor effect Questions

  1. GCSE
  2. /Physics
  3. /7.2 The motor effect

90 exam-style questions on AQA GCSE Physics 7.2 The motor effect, covering 7.2.1 Electromagnetism, 7.2.2 Fleming's left-hand rule (HT only), 7.2.3 Electric motors (HT only), and 7.2.4 Loudspeakers (HT only). Each one has a worked solution and a mark scheme showing where the marks go.

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