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In an LR circuit shown below, at t = 0 switch is put on.the time after which the current becomes 1 ampere is

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In an LR circuit shown below, at t = 0 switch is put on.the time after which the current becomes 1 ampere is

(A) ln3 sec

(B)  ln3/2 sec.

(C) 3ln2 sec.

(D) never 

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Correct Answer is: (D) never

 imax = 3/4

∴ i = 1A is not possible.

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