A moving coil galvanometer is an electromechanical instrument used to detect and measure small electric currents. It operates on the principle that a current-carrying coil placed in a magnetic field experiences a torque. The name "moving coil" distinguishes it from "moving magnet" galvanometers—in this device, the coil moves, and the magnet remains stationary.

By connecting a low resistance (shunt) in parallel with the galvanometer.

Mechanical stress or overloading can damage the fine suspension wire. 8. Conclusion

An ammeter must have and connect in series.

The moving coil galvanometer is an elegant application of electromagnetism. Its linear response and high sensitivity make it invaluable for detecting tiny currents. By adding shunt or series resistances, it can be converted into practical ammeters and voltmeters. Despite the rise of digital multimeters, the MCG remains a fundamental teaching tool and a reliable null detector in precision measurements.

Connect the battery, key, rheostat, and galvanometer in series. In parallel with the galvanometer, connect a shunt resistance box (RBOX 2).

To study the principle, construction, working, and applications of a , and to understand how it forms the basis for ammeters and voltmeters.

Powerful horse-shoe magnets with concave pole pieces (North and South) create a strong radial magnetic field.

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