Question

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Answer 1

Req = R + R + R + R = 4R ohm

Total current in the circuit, I = V/R = 12/4R = 3/R

Reading of voltmeter A = Voltage across R1 = I x R1 = 3/R x R = 3V

Reading of voltmeter B= Voltage across R2 = I x R2 = 3/R x R = 3V

Reading of voltmeter C= Voltage across the series combination of R3 and R4 = I x (R3+R4) = 3/R x 2R = 6V

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Answer 2

Explanation:

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