MCQ
In an LR-circuit, time constant is that time in which current grows from zero to the value (where $I_0$ is the steady state current)
  • 0.63 $I_0$
  • B
    0.50 $I_0$
  • C
    0.37 $I_0$
  • D
    $I_0$

Answer

Correct option: A.
0.63 $I_0$
(a) 0.63 $I_0$

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