Question

What is meant by electric current? State its unit.

Answer 1

1. Electric current is defined as the rate of flow of negative charges of the conductor.
2. The unit of electric current unit is $Coulomb/second\left(C/s\right)$.
3. The S.I. unit of electric current is $Ampere\left(A\right)$.
4. Mathematically,

$$\begin{gathered} Electriccuurent=charges/time \\ I=Q/t,whereQ=Coulomb,t=time \\ So, \\ Ampere=coulomb/time \end{gathered}$$

Hence, the SI unit of electric current is coulomb per meter or ampere.