Question

State the relationship between 1 ampere and 1 coulomb.

Answer 1

Ampere — If one coulomb of charge flows through any section of a conductor in one second, then current through it is said to be one ampere.

$1 \text { ampere }=\frac{1 \text { coulomb }}{1 \text { second }}=1 \mathrm{~A}=\frac{1 \mathrm{C}}{1 \mathrm{~s}}=1 \mathrm{Cs}^{-1}$

The smaller units of current are milliampere and microampere.

$\begin{array}{l}1 \text { milliampere }=1 \mathrm{~mA}=10^{-3} \mathrm{~A} \\1 \text { microampere }=1 \mu \mathrm{A}=10^{-6} \mathrm{~A}\end{array}$