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Question 20174
JEE Physics · Easy

Electromagnetic Induction and Alternating Current: Motional EMF MCQ

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Motional EMFEasyQuestion 20174

Question

A rod of length L moves with velocity v perpendicular to a uniform field B. The motional EMF is:
  1. A
    BLv
    Correct
  2. B
    BL/v
  3. C
    B/Lv
  4. D
    BvL²

Correct answer

BLv

Explanation

EMF = BLv (for L, v, and B all mutually perpendicular). This is the motional EMF from the Lorentz force on charge carriers in the moving rod.

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