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A coil of self inductance 50 henry is jo...

A coil of self inductance 50 henry is joined t the terminals of a battery of e.m.f 2 volts through the circuit . If the battery is now disconnected , the time in which the currents will decay to 1/e of its steady value is :

A

500s

B

50 s

C

5 s

D

0.5 s

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The correct Answer is:
C
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