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A solenoid has an inductance of 60 henry...

A solenoid has an inductance of `60` henrys and a resistance of `30` ohms. If it is connected to a `100` volt battery. How long will it take for the current to reach `(e-1)/(e)~=63.2%` of its final value

A

1 second

B

2 second

C

e second

D

2e second

Text Solution

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The correct Answer is:
B
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