Question

In the circuit given below, the maximum power that can be transferred to the resistor RL is _____________

(a) 1 W

(b) 10 W

(c) 0.25 W

(d) 0.5 W

This question was addressed to me during an interview for a job.

This key question is from Series-Series Connection of Two Port Network topic in chapter Two-Port Networks of Network Theory

Answer 1

Correct option is (c) 0.25 W

To explain: For maximum power transfer to the load resistor RL, RL must be equal to 100 Ω.

∴ Maximum power = \(\frac{V^2}{4R_L}\)

 = \(\frac{10^2}{4 ×100}\) = 0.25 W.