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12 Magnetism and the motor effect

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Question 58
H

A wire experiences a magnetic force of 0.48 N. The magnetic flux density is reduced by 25%, the current is doubled, and the length in the field is halved. The wire remains perpendicular to the field. What is the new force?

[1]
A

0.36 N0.36\ \mathrm{N}0.36 N

B

0.12 N0.12\ \mathrm{N}0.12 N

C

0.72 N0.72\ \mathrm{N}0.72 N

D

0.48 N0.48\ \mathrm{N}0.48 N

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12 Magnetism and the motor effect Questions

  1. GCSE
  2. /Physics
  3. /12 Magnetism and the motor effect

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