A series RL circuit is excited by a voltage v(t) = Vm sin (œât + Œ� – McqOptions

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1.	A series RL circuit is excited by a voltage v(t) = Vm sin (œât + Œ¶). The transient current will be zero if
A.	Œ¶ = 0
B.	œâ = 0
C.	Œ¶ = tan-1 (œâL/R)
D.	œâ - tan-1 (œâL/R) = p/2
Answer» D. œâ - tan-1 (œâL/R) = p/2

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