Question

Find the equivalent resistance between terminals A and B of the circuit shown below.

(a) 0.33

(b) 3.33

(c) 33.3

(d) 333

The question was asked in an online quiz.

The doubt is from Norton’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory

Answer 1

Correct answer is (b) 3.33

The best I can explain: Norton’s resistance is equal to the parallel combination of both the 5Ω and 10Ω resistors that is R = (5×10)/15 = 3.33Ω.