> Q. A voltmeter of resistance $R$ is to be used to measure the potential difference across a resistance $r$. The nearest reading in the absence of voltmeter ? – LIVE ANSWER TODAY

Q. A voltmeter of resistance $R$ is to be used to measure the potential difference across a resistance $r$. The nearest reading in the absence of voltmeter ?

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A voltmeter of resistance $R$ is to be used to measure the potential difference across a resistance $r$. The nearest reading in the absence of voltmeter ?

Solution:

Voltmeter is used in parallel and it has some resistance of its own also.

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