Question

For an A.C. Circuit, contianing a resistance and a capacitance in series, the angle between current and e.m.f. is given by `tan theta = 1(omega CR)`. The power factor of this circuit is
A. `omega C R`
B. `R/(omega C)`
C. `R/(sqrt(R^(2)+((1)/(omegaC))^(2)))`
D. `R/(sqrt(R+(1)/(omegaC)))`

Answer 1

Correct Answer - C
`tan theta = 1/((omegaC)/R)`
`:.cos theta = (R)/(sqrt(R^(2)+((1)/(omega C))^(2))`