Which one of the following expressions gives the impedance of a series circuit?

PHYSICS · Single correct · CBSE · Physics · Alternating Current · Alternating Current

Problem

Which one of the following expressions gives the impedance

Z

of a series

RLC

circuit? (a)

Z=\sqrt{R^{2}+X_L^{2}+X_C^{2}}

(b)

Z=\sqrt{R^{2}+(X_L-X_C)^{2}}

(c)

Z=R+|X_L-X_C|

(d)

Z=\sqrt{R^{2}+(X_L+X_C)^{2}}