Radio Amateur Quiz Canadian License

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Question A-001-001-001

What is the meaning of the term ""time constant"" in an RL circuit ?

Correct Answer

The time required for the current in the circuit to build up to 63.2% of the maximum value

Explanation

The time constant (τ = L/R) in an RL circuit defines the time for current to reach 1 - 1/e (approx. 63.2%) of its final value during energization.

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