JEE Physics · Easy

Magnetism: Force on Current Wire MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Force on Current WireEasyQuestion 20165

Question

Force on a straight wire of length L carrying current I perpendicular to field B is:
  1. A
    ILB
    Correct
  2. B
    IL/B
  3. C
    B/IL
  4. D
    I/LB

Correct answer

ILB

Explanation

F = IL × B; for perpendicular orientation the magnitude is ILB.