Question

In a network maximum power transfer occurs when __________

(a) RTh= -RL

(b) RTh/RL =0

(c) RTh= RL

(d) RTh+RL= 1

This question was posed to me in an interview for job.

The question is from Maximum Power Transfer and Superposition in chapter Techniques of Circuit Analysis of Electric Circuits

Answer 1

Right choice is (c) RTh= RL

The explanation is: Maximum power transfer occurs when load resistance equals the thevenin’s resistance.