Question Detail

PHY 102 Electromagnetic Induction Objective Question
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Question

What is the formula for motional emf when a wire of length L moves with velocity v perpendicular to a magnetic field B?
Options
A ε = BLv
Correct Answer
B ε = BL/v
C ε = Bv/L
D ε = Lv/B
Correct Answer

Option A is the correct answer.

Detailed Explanation

For a wire moving perpendicular to the magnetic field, the induced motional emf is ε = B L v, where L is the length of the wire in the field, v is the speed, and B is the field strength.

Hint

EMF = field × length × velocity.

Question Info

Course: PHY 102
Topic: Electromagnetic Induction
Type: Objective
Difficulty: Not specified
Question 12 of 1819
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