Ohm's Law
Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature, remain constant.
V = I R
where V is the voltage across the conductor, I is the current flowing through the conductor and R is the resistance provided by the conductor to the flow of current.
Water Pipe Analogy for Ohm’s Law
Illustration of water pipe analogy to understand Ohm’s law.
Ohm's Law basically explains how electricity behaves in a circuit when we have different amounts of voltage applied to it. Because we can't physically see electricity or the tiny particles called electrons that carry it, comparing it to water flowing through pipes helps us understand it better. Imagine water flowing through pipes: the pressure of the water is like voltage, the amount of water flowing through the pipes is like current, and the size of the pipes is like resistance. So, if you increase the pressure (voltage), more water (current) will flow through the pipes, especially if the pipes are wider (lower resistance). It's a simple way to understand how electricity behaves in a circuit.