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.