Question

Consider the following circuit. Determine the current flowing in the ammeter having 1Ω internal resistance in series with the 6Ω resistor.

(a) 0.1

(b) 0.2

(c) 0.3

(d) 0.4

I got this question during an online interview.

Question is from Compensation Theorem topic in division Useful Theorems in Circuit Analysis of Network Theory

Answer 1

The correct answer is (c) 0.3

To explain: New total current = 0.33/(7+4||2||3)=0.04A. Now reading of ammeter = 0.33-0.04=0.29A ≅ 0.3A.