Question

The maximum power delivered by the source in the below circuit shown?

(a) 39.33

(b) 40.33

(c) 41.33

(d) 42.33

The question was posed to me in a job interview.

My question is taken from Maximum Power Transfer Theorem topic in section Useful Theorems in Circuit Analysis of Network Theory

Answer 1

Correct answer is (c) 41.33

Best explanation: The term power is defined as the product of the square of current and the impedance. So the maximum power delivered by the source in the circuit is P = I^2RxZ = 1.66^2×15 = 41.33W.