Q. The formula of impedance for circuit R-L is

1700 250 Rajasthan PETRajasthan PET 2003 Report Error

A

$R^{2} + \frac{1}{ω ^{2} L ^{2}} R$

B

$R^{2} + ω^{2} L^{2}$

C

$R^{2} + ω^{2} L^{2}$

D

$ω^{2} L^{2} + \frac{1}{R ^{2}}$

Solution:

$Z = R^{2} + X_{L}^{2} = R^{2} + ω^{2} L^{2}$