The reading of the voltmeter in this circuit is

A. 12.5 V

Explanation

Correct option is A)

Simplified circuit is as drawn below.

\(R_{\text {eq }}=300\)

\(\mathrm{I}=\frac{\mathrm{V}}{\mathrm{R}_{\text {eq }}}=\frac{30}{300}=0.1 \mathrm{~A}\)

\(\text { Reading of voltmeter } =\mathrm{I} \times \mathrm{R}=0.1 \times 125 \\=12.5 \mathrm{~V}\)

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