is anused to measure the volts of a circuit or variousused in. Theseare also used for the measurement of electronic components. These instruments are available in many ranges fromto. These voltmeters are available for AC and DC.

These instruments are available in so many types in market and in various ranges available for the measurement of voltage of different circuits. These types of voltmeters are explained below:

consists of aand a moving pointer when its coil generates, a torque is produced in the instrument and the force is attracted to the moving iron to move from its position according to the amount of the torque produced in it. The pointer is connected to the moving iron and it moves and shows deflection on its scale and a reading of voltmeter is observed. Moving Iron type voltmeters are divided into its two types explained below:

Attraction Type Voltmeters consists of the same parts that a moving iron voltmeter consists but the working principle is different. It depends

on the attraction of soft iron into a magnetic field. The working principle of these instruments is according to this: “If a piece of a non-magnet soft iron is brought near, either of the two ends of a current-carrying coil, it would be attracted into the coil in the same way as it would be attracted by the pole of a bar magnet.” Hence, if we attach a disc of soft iron on a spindle the iron disc will rotate into the coil and the electric current will pass through it and the pointer will deflect.