Question

The impedance of a circuit consists of 3 Ω resistance and 4 Ω resistance. The power factor of the circuit is

(a) 0.4

(b) 0.6 

(c) 0.8 

(d) 1.0

Answer 1

(b) 0.6

tan Φ =\(\frac{4}{3}\) . Power factor = cos Φ = \(\frac{3}{5}\) = 0.06