Network Analysis and Synthesis - ECE Questions and Answers

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

90°

60°

45°

30°

Answer : Option B

Explanation :

EI cos θ = 0.25 or I cos θ = 0.25

From above equations cos θ = 0.707 and θ = 45°.

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