Question:medium

A solenoid has an inductance of 60 H and a resistance of 30 ohm. If it is connected to a 100 V battery, how long will it take for the current to reach \( e^{-1} \) of its maximum value?

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The time constant \( \tau \) in an RL circuit defines the time required for the current to reach approximately 63.2% of its maximum value.

Updated On: Apr 22, 2026

1 s
2 s
e second
2 e second

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The Correct Option is B

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