Question

If power factor = 0, then the current to a load is ______ with the voltage.

(a) in phase

(b) out of phase

(c) 45⁰ out of phase

(d) 90⁰ out of phase

I had been asked this question during an interview for a job.

This key question is from Apparent Power and Power Factor topic in division Power and Power Factor of Network Theory

Answer 1

The correct answer is (d) 90⁰ out of phase

To explain I would say: If the power factor = 0, then the current to a load is 90⁰ out of phase with the voltage and it happens in case of reactive load.