An inductance L and a resistance R are connected to a battery. After sometime the battery is removed but L and R remain connected in the closed circuit. The value of current will reduce to 37% of its maximum value in
A
RL second
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B
RL second
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C
LR second
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D
1LR second
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Solution
The correct option is DLR second Decay of current =i(t)=i0e−Rt/L