What does the letter E represent in Ohm's law calculations?

In Ohm's law calculations, the letter E represents Voltage. Ohm’s law is a fundamental principle in electrical engineering and states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (E) across the two points and inversely proportional to the resistance (R) of the conductor. This relationship is expressed in the formula:

E = I × R

Where E is voltage measured in volts, I is current measured in amperes, and R is resistance measured in ohms. Understanding this relationship is crucial for properly analyzing and designing electrical circuits, as it allows electricians and engineers to calculate how much current flows at a given voltage and resistance, ensuring safe and efficient electrical systems.