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The self-inductance of a coil is 2H. The...

The self-inductance of a coil is 2H. The current in the coil changes from 8A to 2.95 A in 0.01 s. The time constant of the coil will be -

A

2s

B

0.1 s

C

10 ms

D

1 ms

Text Solution

Verified by Experts

The correct Answer is:
C
`(I)/(I_("max")) = (2.95)/(8) = 0.368`
then `t = tau = 0.01 s = 10 ms`
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