General Science • PhysicsEasy
Which instrument is used to measure electric current in a circuit?
A. Voltmeter
B. Ammeter✓ Correct Answer
C. Galvanometer
D. Wattmeter
💡 Solution & Explanation
An ammeter is a low-resistance instrument used to measure the magnitude of electric current flowing through a circuit and must always be connected in series to record accurate readings. A voltmeter measures electrical potential difference and is connected in parallel across components, unlike ammeters. An ideal ammeter possesses zero internal resistance to prevent any alteration of the total current flowing through the measured branch.
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