difference between voltmeter and galvanometer
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Explanation:
The Potentiometer is an instrument used for measuring the emf, whereas the voltmeter is a type of meter which measures the terminal voltage of the circuit. The Potentiometer accurately measures the potential difference because of zero internal resistance. ... Thus the voltmeter approximately measures the voltage.
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galvanometer can be turned into an ammeter by parallely connecting a resistance in the electric circuit. It can be used as a voltmeter when resistance is connected in series with it.
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