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An aluminium ring B faces an electromagn...

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 decreases, A will repel B

C

if I increases, A will attract B

D

if I increases, A will repel B

Text Solution

Verified by Experts

The correct Answer is:
D

If currnet through A increase, magnetic field (x) linked with coil B increase. Hence, anti-clockwise current induces in coil B. As shown in figure both the currents produce repulsive effect.
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DC PANDEY ENGLISH-ELECTROMAGNETIC INDUCTION-Taking it together
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