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A coil of inductance 300mh and resistanc...

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

A

`0.15s`

B

`0.3s`

C

`0.05s`

D

`0.1s`

Text Solution

Verified by Experts

The correct Answer is:
D
`i=i_(0)(1-e^(-Rt)/(L))impliesFor i=(i_(0))/(2),t=0.693(L)/(R )`
`impliest=0.693xx(300xx10^(-3))/(2)=0.1` sec
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Knowledge Check

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

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