Chapter 22.1, Problem 21SSC

To determine

Whether J is correct in stating that resistance will increase if the voltage increases.

Answer to Problem 21SSC

No, resistance is the property of the material and it doesn’t change with change in potential or current.

Explanation of Solution

Introduction:

From Ohm’s law, the expression of resistance is,

  $R=\frac{\Delta V}{I}$

Here, $\Delta V$ is the potential difference and I is the current.

When the voltage increases, the current will increase since the resistance is a property of the material and it doesn’t change with respect to the current or applied voltage.

Conclusion:

Hence, J is incorrect in stating that if the applied voltage increases then the resistance will also increase.