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Question

Which of the following device can measure both the magnitude and direction of electric current in an electric circuit?

A
Voltmeter
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B
Ammeter
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C
Galvanometer
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D
Potentiometer
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Solution

The correct option is C Galvanometer
A galvanometer is a device that measures both the magnitude and direction of electric current in an electric circuit.
An ammeter is a device that measures only the magnitude of electric current in a circuit.
Potentiometer and voltmeter are used to measure potential difference in an electric circuit.

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