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Q: Galvanometer is used for measuring
  • A. Direction of speed
  • B. Direction of magnetic flux
  • C. Direction of sound
  • D. Direction of current
Correct Answer: Option D - A galvanometer is an electromechanical instrument used for detecting and indicating an electric current on a circuit. A galvanometer works as an actuator, by producing a rotary deflection, in response to electric current flowing through a coil in a constant magnetic field.
D. A galvanometer is an electromechanical instrument used for detecting and indicating an electric current on a circuit. A galvanometer works as an actuator, by producing a rotary deflection, in response to electric current flowing through a coil in a constant magnetic field.

Explanations:

A galvanometer is an electromechanical instrument used for detecting and indicating an electric current on a circuit. A galvanometer works as an actuator, by producing a rotary deflection, in response to electric current flowing through a coil in a constant magnetic field.