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A metalic ring is dropped down, keeping ...

A metalic ring is dropped down, keeping its plane perpendicular to a constant and horizontal magnetic field. The ring enters the region of mangetic fied at `t=0` and completely emerges out `t= Ts`. The current in the ring varies as:

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
When ring enters and leaves, then the field polarity of induced emf is opposite. Also, during the stay of ring completely in the field there is no induction.
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