Question

The galvanometer is protected during transport by
1. connecting critical damping resistance across the galvanometer terminals
2. shorting the galvanometer terminals
3. keeping the galvanometer terminals open-circuited
4. connecting a capacitor across the galvanometer terminals

Answer 1

Correct Answer - Option 1 : connecting critical damping resistance across the galvanometer terminals

A galvanometer is an electromechanical device used to detect the electric current in a circuit.

• It works as an actuator, by producing a rotary deflecting of a pointer when an electric current flowing through a coil in the constant magnetic field.
• During transportation, if any emf induced due to a stray magnetic field or any other changes, then there must be a damping resistance across the galvanometer terminal to protect the galvanometer.