Question

How is voltage related to resistance?

Answer 1

Voltage

1. Voltage is also termed the potential difference.
2. Potential difference is defined as the work done in bringing a unit positive charge from one point on a conductor to another point on the same conductor.
3. The unit of potential difference is volt or $V$.

Resistance

1. When current flows through a circuit it experiences a resistive force.
2. The parameter that gives the magnitude of resistive force experienced by the current is called resistance.
3. The unit of resistance is ohm or $\Omega$.

Ohm's Law

According to ohms law, the current flowing through a circuit is directly proportional to the voltage across the circuit.

Let $V$ be the voltage, $I$ be current, and $R$ be the constant of proportionality, then

$V\propto I$

or $V=IR$

Hence, the relation between voltage and resistance is given above.