Explain how current is formed. Give suitable example.

Explanation

`rArr` Charge on particle is responsible for electric force between two particles.
`rArr` Electric charge is of two type :
(1) Positive and (2) Negative
`rArr ` In nature also in certain condition electric current is produced. For example lightening in the sky. During this there is no steady flow of charge but changes unevenly. Sometimes lightening is dreadful.
`rArr` In devices used by us in day to day life there is steady flow of charge. Torch and cell driven clock are examples of this.