Question

In the following circuit, when R = 0 Ω, the current IR equals to 10 A. The maximum power will be?

(a) 50 W

(b) 100 W

(c) 200 W

(d) 400 W

I had been asked this question in an interview for job.

The query is from Advanced Problems on Superposition Theorem topic in chapter Useful Theorems in Circuit Analysis of Network Theory

Answer 1

Correct choice is (a) 50 W

For explanation: Using Superposition Theorem, we get, I = 10 A and R = 2 Ω

∴ Pmax = (\(\frac{10}{2}\))^2 × 2

= 5 × 5 × 2 = 50 W.