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When a voltmeter is put across a part of...

When a voltmeter is put across a part of the circuit, does it record slightly less or more than the actual voltage across that part? Explain.

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When a voltmeter is put across a part of the circuit, it draws some current from the circuit. Due to it, the potential difference across that part becomes less than actual. As a result of it, voltmeter will record slightly less than the actual potential difference across that part.
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