Question

Define Ohm's law in an electrical circuit.

Answer 1

it state that electric current passing through the conductor is directly proportional to the potential difference across the conductor .

Answer 2

the potential difference across 2 points of a given metallic wire in a electric circuit is directly proportional to the current flowing through it. this is ohms law
V propotional to I
to remove proportionality sign we add a constant R(resistance)
hence
V=IR