Networks Analysis and Synthesis - Engineering

Q1:

In figure, E = 1 V (rms value). The average power is 250 mW. Then phase angle between E and I is

A 90°

B 60°

C 45°

D 30°

ANS:B - 60°

EI cos θ = 0.25 or I cos θ = 0.25 From above equations cos θ = 0.707 and θ = 45°.