Home Physics Electromagnetic Induction Faraday's and Lenz's Law An aluminium ring B faces an electromagnet A…
Physics Electromagnetic Induction Faraday's and Lenz's Law MCQ (Single Correct)

An aluminium ring B faces an electromagnet A. The current I through A can be altered

A
Whether I increases or decreases, B will not experience any force
B
If I decrease, A will repel B
C
If I increases, A will attract B
D
If I increases, A will repel B

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Text Solution

Verified by Experts
The correct answer is:
D

If current through A increases, crosses (X) linked with coil B increases, hence anticlockwise current induces in coil B. As shown in figure both the current produces repulsive effect.

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