Eamcet Physics - 2 nd Year : Unit 4.1 ( Alternating Current ) - Alternating Currents Free Online Tests | Mock Tests | Preparation | Practice Tests

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The time constant of an LR circuit represents the time in which the current in the circuit

A. Reaches a value equal to about 37% of its final value

B. Reaches a value equal to about 63% of its final value

C. Attains a constant value

D. Attains 50% of the constant value

E. None of the above

View Answer

Correct choice: B

Explanation:

None

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