Which of the following instruments can detect the presence of a current in a circuit?
Show answer & explanation
Correct answer: A
Explanation
The correct option is option 1 i.e. Galvanometer.
- A galvanometer is an electromechanical instrument used for detecting and indicating an electric current.
- A galvanometer works as an actuator, by producing a rotary deflection of a pointer, in response to electric current flowing through a coil in a constant magnetic field.
- A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure.