Electrostatics

The factors affecting the quantities of matter liberated during the process of electrolysis were investigated by Faraday. First Law: The mass of a substance liberated…

The simple cell or voltaic cell consists of two electrodes, one of copper and the other of zinc dipped in a solution of dilute sulphuric…

The starting point to the development of electric cells is the classic experiment by Luige Galvani and his wife Lucia on a dissected frog hung…

The passage of an electric current through a liquid causes chemical changes and this process is called electrolysis. The conduction is possible, only in liquids…

A wattmeter is an instrument used to measure electrical power consumed i.e energy absorbed in unit time by a circuit. The wattmeter consists of a…

Metre bridge is one form of Wheatstone’s bridge. It consists of thick strips of copper, of negligible resistance, fixed to a wooden board. There are…

An important application of Kirchoff’s law is the Wheatstone’s bridge (Figure). Wheatstone’s network consists of resistances P, Q, R and S connected to form a…

Electric energy is defined as the capacity to do work. Its unit is joule. In practice, the electrical energy is measured by watt hour (Wh)…

If I is the current flowing through a conductor of resistance R in time t, then the quantity of charge flowing is, q = It.…

A potentiometer is a passive electronic component. It is an electric instrument that used to measure the EMF (electromotive force) of a given cell, the…