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  • If all meters are ideal and reading of voltmeter 3 is 6V. Power supplied by voltage source is - <img alt="" src="https://cdn.entrance360.com/media/uploads/2023/07/14/a31.png" style="

If all meters are ideal and reading of voltmeter 3 is 6V. Power supplied by voltage source is -

Option: 1

10 Watt


Option: 2

38 Watt


Option: 3

20 Watt


Option: 4

30 Watt


Answers (1)

best_answer

Current through 20 \mathrm{~W}=\frac{6}{20}
current through 10 \mathrm{~W}=\frac{6}{10}
Total current supplied by voltage source
\begin{aligned} & =\frac{6}{10}+\frac{6}{20} \\ & =27 \text { Volt } \end{aligned}
Voltage of battery = 6+27=33 volt
Power supplied = \frac{9}{10} \times 33
=29.7 or 30 Watt
Potential difference across 30 \mathrm{~W}=\left(\frac{6}{10}+\frac{6}{20}\right) \times 30

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