Question

Definition of 1 ampere.

Answer 1

1. Ampere is the SI unit of electric current.
2. We know that $Current=\frac{charge}{time}ori=\frac{q}{t}$
3. If, $q=1c,t=1stheni=\frac{1c}{1s}=1ampere$

Hence one ampere is a current flowing through the circuit when one coulomb of charge flows through it in one second.