Question

Power factor of a circuit having resistance only is -
A. 1
B. O
R
C.
VR2 + 1/wc
R
VR2 + WL​

Answer 1

Answer:

c is the correct answer

Answer 2

Answer: Power Factor=1

Explanation:

In an AC circuit, the power factor is defined as cosФ, in the formula of Power (P=Vrms I rms cosФ)

cosФ=$\frac{R}{Z}$ where Z=$\sqrt[2]{R^{2}+X^{2} }$

If it is Purely resistive, X=0(Reactance), Hence Z=R

So, cosФ=1  which is known as power factor.