1.

Define electric current and give an experssion to it.

Answer»

Solution :Electric current is called as the AMOUNT of charge crossing any section of the CONDUCTOR in one SECOND.
Let Q be the charge crossing any cross section of the conductor in time 't'.
`therefore"Electric current"=("Electric charge")/("Time interval")`
`I=(Q)/(t)`
The S.I unit of current is 'ampere' denoted by 'A'.


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