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A constant voltage is applied to a serie...

A constant voltage is applied to a series `R-L` circuit by closing the switch. The voltage across inductor `(L=2H)` is `20V` at `t=0` and drops of `5V` and `20 ms`. The value of `R` in `Omega` is

A

`100 In 2Omega`

B

`100(1-In2)Omega`

C

`100 In 4Omega`

D

`100(1-In4)`

Text Solution

Verified by Experts

The correct Answer is:
C
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