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The alternating emf of e=e(0) sin omegat...

The alternating emf of `e=e_(0)` sin `omegat` is applied across LR series circuit. The impedance and phase angle between current and voltage is

A

`sqrt(R^(2)+X_(L)^(2)),"tan"^(-1)((X_(L))/(R))`

B

`sqrt(R^(2)-X_(L)^(2)),"tan"^(-1)((X_(L))/(R))`

C

`R+X_(L),tan^(-1)((R)/(X_(L)))`

D

`R-X_(L),tan^(-1)((R)/(X_(L)))`

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The correct Answer is:
A
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