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The instrument used for measuring an electric current is:(a) Ammeter(b) Galvanometer(c) Voltmeter(d) Potentiometer
Correct Answer: (a) Ammeter
Explanation:
Ammeter is used to measure electric current. To find the amount of current flowing through the circuit, it must be connected in series and must have less resistance.
Electric current is defined as the flow of electric charge in a conductor. It is measured in amperes. Its symbol is A.
One coulomb of charge flows through any cross-section of a conductor in 1 second is one ampere.
Mathematically, 1 A = 1 C/s.
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