Hall Effect

When magnetic field is applied perpendicular to a current carrying conductor, then voltage is developed across the conductor in the direction perpendicular to both current and magnetic field. This effect is called Hall effect. Let us consider a rectangular cross…

Moving Coil Galvanometer

Moving coil galvanometer is a device which is used to detect and measure small electric currents present in an electric circuit. Principle It is based on the principle that, “When a current carrying coil is placed in magnetic field, it…