Galvanometer

A galvanometer is a device used to measure and detect small electric currents. It is a type of ammeter that is sensitive enough to measure very low currents. Galvanometers are commonly used in electrical and electronic properties measuring and testing instruments.

Galvanometers work based on the principle of electromagnetic induction. They consist of a coil of wire suspended between the poles of a permanent magnet. When an electric current flows through the coil, it generates a magnetic field that interacts with the magnetic field of the permanent magnet. This interaction causes the coil to rotate, and the amount of rotation is proportional to the current flowing through the coil.

Galvanometers can be used to measure both direct current (DC) and alternating current (AC). They are often used in laboratory experiments, electrical circuit testing, and in various scientific and industrial applications where precise current measurements are required.

In addition to measuring current, galvanometers can also be used as a component in other instruments, such as voltmeters, wattmeters, and oscilloscopes, to measure voltage, power, and waveform characteristics.

Overall, galvanometers are essential tools in the field of electrical and electronic properties measuring and testing instruments, providing accurate and reliable current measurements for a wide range of applications.