Switch is closed at t = 0 then the curre...

Switch is closed at `t = 0` then the current in the circuit at `t = L/2R` is

A

`(E/R)[sqrt(e)-1)/sqrt(e))]`

B

`(E/R)[(e²-1)/e²`

C

`E/R`

D

`(E/R)e^2`

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