Question

Draw the experimental set-up to verify that $\frac{V}{I}$ is constant for a Conductor.

Answer 1

The experimental circuit diagram to verify the ohm's law is shown above.

In the circuit diagram, voltmeter $V$ is connected in parallel to the conductor $R$ and ammeter $A$ is connected in series with conductor $R$. A power supply $V_{in}$ generates an electric current $I$ in the circuit which is measured by ammeter $A$. As we changes the voltage of power supply, the potential difference across the conductor changes and we measure the corresponding current flowing through the circuit with the help of ammeter. Plotting a graph $V$ Vs $I$ gives a straight line which concludes that slope of the line i.e.$\frac{V}{I}$ is a constant.