Question : Which of the following instruments can detect the presence of a current in a circuit?
Option 1: Galvanometer
Option 2: Sphygmomanometer
Option 3: Barometer
Option 4: Magnetometer
Correct Answer: Galvanometer
Solution : The correct answer is Galvanometer.
A galvanometer is a tool used to measure the amount or identify a tiny electric current. A coil in a magnetic field or the movement of a magnetic needle, which is a crucial component of a galvanometer, can typically indicate the current and its intensity.
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