What is the correct Ohm's Law formula for calculating voltage?

The formula for calculating voltage according to Ohm's Law is indeed expressed as E = I × R. In this equation, E represents the voltage (measured in volts), I represents the current (measured in amperes), and R represents the resistance (measured in ohms). The relationship established by Ohm's Law indicates that voltage is equal to the product of the current flowing through a circuit and the resistance of that circuit. This fundamental principle is crucial in electrical engineering and electronics, as it allows for calculations that predict how changes in current or resistance will affect voltage within an electric circuit.

Understanding this relationship is vital for designing circuits and troubleshooting electrical issues. It also underpins many more complex concepts in electrical engineering and industry applications, such as power calculations and circuit analysis. The other formulas presented do not correctly represent the relationship defined by Ohm's Law, focusing rather on different electrical principles.