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Question

The device used for measuring potential difference is known as

A
galvanometer
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B
ammeter
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C
voltmeter
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D
potentiometer
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Solution

The correct option is C voltmeter
Answer is C.
A voltmeter is an instrument used for measuring electrical potential difference between two points in an electric circuit. A voltmeter is placed in parallel with a circuit element to measure the voltage drop across it and must be designed to draw very little current from the circuit so that it does not appreciably change the circuit it is measuring.

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