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The time constant of an inductance coil ...

The time constant of an inductance coil is `2.0xx10^(-3)s`. When a `90Omega` resistance is joined in series, then the time constant becomes `0.5xx10^(-3)s`. The inductance and resistance of the coil are

A

30mH, `30Omega`

B

30mH, `60Omega`

C

60mH, `30Omega`

D

60mH, `60Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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