Certain galvanometers have a fixed core made of non magnetic metallic material. The function of this metallic material isto oscillate the coil in magnetic field for longer period of timeto bring the coil to rest quickly to produce large deflecting torque on the coilto make the magnetic field radial

A galvanometer is an instrument that uses a magnetic needle in an electrical field to detect small currents of electricity.In order to measure the electric current in a circuit, a galvanometer is connectedain series to the circuit bin parallel to the circuitcat any point in the circuit dnear the cell in the circuit

Fig 9.1 shows a magnet on the end of a spring and a coil of wire connected to a sensitive center-zero galvanometer. The magnet can move freely through the coil. The magnet is pulled down and released. Describe and explain what happens to the needle of a sensitive galvanometer.

9. The working principle of galvanometer is based upon

A galvanometer having a coil resistance of 30Ω shows full scale deflection when a current of 2A passes through it. It can be converted into an ammeter to read currents upto 10A by :-by putting in series a resistance of 240Ωby putting in parallel a resistance of 240Ωby putting in series a resistance of 7.5Ωby putting in parallel a resistance of 7.5Ω

Describe this in a detailed way and its applications 1. Galvonometer