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A coil of inductance 300 mH and resistance 2 is connected to a source of voltage 2V. The current reaches half of its steady state value in

Options

  1. A0.05 ~s
  2. B0.1 ~s
  3. C0.15 ~s
  4. D0.3 ~s

Correct answer

B. 0.1 ~s

Step-by-step solution

I = I _ (1- e ^ - R L t )0.693= R L t t = .3 0.693 2 =0.1 sec

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