Question

What is the relationship between current and resistance?

Answer 1

1. Current can be defined as the time rate of flow of charge and resistance in a conductor is the opposition/obstruction offered to the current flowing through it.
2. Ohm's law relates the current and the potential difference by stating that the current flowing between two points in a conductor is directly proportional to the potential difference between the two points.
3. The mathematical expression for Ohm's law is $I=\frac{V}{R}$. Here, $I$ is the current, $V$ is the potential difference and $R$ is the resistance. If the potential difference remains constant, then the current is inversely proportional to the resistance.

Hence, the relation between current and resistance is $I=\frac{V}{R}$ or $I\propto \frac{1}{R}$.