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In the following circuit, the current drawn by 2Ω resistor (a-b) after the source is replaced is?

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In the following circuit, the current drawn by 2Ω resistor (a-b) after the source is replaced is?

(a) 143

(b) 14.3

(c) 1.43

(d) 0.143

The question was posed to me in a job interview.

The above asked question is from Reciprocity Theorem topic in chapter Useful Theorems in Circuit Analysis of Network Theory

1 Answer

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Correct answer is (c) 1.43

For explanation: The circuit after the source is replaced is

Total resistance = 3.23Ω. The current drawn by the circuit  (It)=20/3.23=6.19A. The current in branch a-b is 1.43A.

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