Electroplating

The process of electrolysis is used in depositing a layer of one metal over other. The process of depositing a layer of one metal over the surface of another metal by passing electric current in called electroplating. Electroplating of metals is done to protect the...

Electrolysis

You have already learnt that there are certain chemical reactions which produce electricity. But, it is interesting to note that when electric current is passed through certain liquids a chemical reaction takes place. This is called chemical effect of electric...

Heating Effect Of Electric Current

 When an electric current is passed through a conductor, the conductor becomes hot after some time and produce heat. This happens due to the conversion of some electric energy passing through the conductor into heat energy. This effect of electric current is called...

Electric Energy

The electric energy consumed by an electrical appliance is given by the product of its power and the time for which it is used i.e.                  Electrical energy    =    Power X time                  or,                  E    =    P X t The S.I. unit of...

Electric Power

 The rate at which electrical work is done by an electrical appliance is called electric power, i.e.                  Power    =                             P    =                   but,    W    =    VIt               So       P    =                   So       P    =...

Parallel Circuit

When two or more resistors are connected across a common point so that same current flows through different paths they are said to be connected in parallel. Suppose three resistors R1, R2 and R3 are joined in parallel as shown in figure and let the potential...