State Ohm’s law. Draw a labelled circuit diagram to verify this law in the laboratory. If you draw a graph between the potential difference and current flowing through a metallic conductor, what kind of curve will you get?
The graph between potential difference and current in a conductor will be a straight line. It can be explained using Ohm's law.
This law states that the ratio of potential difference between the ends of a conductor to the current flowing through the conductor is a constant. This constant is defined as Resistance of the conductor.
Or V=I R
Where R=Constant (Resistance)