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A coil carrying a steady current is shor...

A coil carrying a steady current is short-circuited. The current in it decreases `alpha` times in time `t_(0)`. The time constant of the circuit is

A

`t_(0)In eta`

B

`(t_(0))/(In eta)`

C

`(t_(0))/(eta)`

D

`(t_(0))/(eta-1)`

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The correct Answer is:
B
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