Uploaded April 2024 | Updated September 2026, 2 weeks ago

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Here is an A Level physics style question on Kirchhoff's 2nd law in which we find the potential difference, voltage, between two parallel branches. In this question we apply a voltmeter as a bridge between the branches and use the laws of circuits to find the reading of the volt meter.
Similar questions appear often in AQA A Level Physics, but also applicable to all exam boards including OCR, CIE, Edexcel and similar courses such as IB, AP Physics and many others.
I hope this question is useful!