Question

In the circuit given below, the value of load RL, for which maximum power is transferred through it is ___________

(a) 2 Ω

(b) 3 Ω

(c) 1 Ω

(d) 6 Ω

I got this question in class test.

Enquiry is from Advanced Problems on Reciprocity Theorem in section Useful Theorems in Circuit Analysis of Network Theory

Answer 1

The correct choice is (b) 3 Ω

The explanation: I + 0.9 = 10 I

Or, I = 0.1 A

VOC = 3 × 10 I = 30 I

Or, VOC = 3 V

Now, ISC = 10 I = 1 A

Rth = 3/1 = 3 Ω.