# Electrical Engineering - RC Circuits - Discussion

### Discussion :: RC Circuits - General Questions (Q.No.18)

18.

When the frequency of the voltage applied to a series RC circuit is increased, the phase angle

 [A]. increases [B]. decreases [C]. remains the same [D]. becomes erratic

Explanation:

No answer description available for this question.

 Amit Kumar Saha said: (May 18, 2012) We know, Xc=1/2*pi*f*c ------ i Hence, from eqn. i, if f(frequency) increased, Xc gradually decreased. Also we know, Phase angel= tan^-1(Xc/R) So if Xc decreased, also phase angle gradually decreased.

 Tapash said: (Jul 9, 2015) Any wide description about it.

 Aleksandr said: (Feb 7, 2016) Phase angle = arctg ((XL-XC)/R), XL = 0, phase angle = arctg(-XC/R), So tg(alpha) = -XC/R, when XC decrease tg (alpha) from minus go to 0 to be increased. So alpha also from minus go to 0. So the question is how you consider angle increase or decrease. So if alpha from -40 goes to 0 it's decrease or increase?

 Niru said: (Jan 8, 2018) Alpha=tan-1(xc/r). xc=k(1/f). Thus xc dec. Alpha dec.