Question

What is Ohm's law short answer?

Answer 1

1. Ohm's law: Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature, remain constant.
2. The mathematical expression for Ohm's law:
   $$\begin{gathered} \mathrm{potential}\mathrm{difference}\propto \mathrm{current} \\ \mathrm{V}\propto \mathrm{I} \end{gathered}$$
   Taking proportionality constant $\mathrm{R}$, now
   $\mathrm{V}=\mathrm{IR}$

Hence , from Ohm's law we can conclude that, $\mathrm{potential}\mathrm{difference}=\mathrm{current}\times \mathrm{resistance}$