Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperatures remain constant.
To eliminate the proportionality a constant is introduced. So,
Ohm's Law Graph:
Plotting a graph taking current along -axis and voltage along -axis By Ohm's law, …..(1) This equation is of the form ……(2) which is a straight line equation, where is slop and is constant.
By comparing equation (1) and equation (2), we get to know For -axis, For -axis, The slope,