Ohm's Law

In a series configuration, the current through all of the resistors is the same, but the voltage across each resistor will be in proportion to its resistance. Resistors in a parallel configuration are each subject to the same potential difference (voltage), however the currents through them add.

Ohm's law serves as an algebraic recipe for calculating the current if the electric potential difference and the resistance are known.

This lesson will teach you to describe the relationship between current, voltage and resistance. Resistance will be defined and explained in its relation between voltage and current. Ohm's Law will be shown and explained through examples to better understand this concept.