Which formula is used to derive current from voltage and resistance?

The formula used to derive current from voltage and resistance is E divided by R equals I. This equation is rooted in Ohm’s Law, which 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.

In this formula, voltage represents the electrical potential difference that drives current through the resistance in the circuit. By rearranging Ohm’s Law, one can easily isolate and calculate the current by taking the voltage and dividing it by the resistance. This fundamental relationship is crucial for understanding electrical circuits and is widely used in electrical engineering and lineman training.

Other options represent different relationships between power, voltage, current, and resistance but do not directly describe how to find current from voltage and resistance. This illustrates the importance of remembering the correct applications of each formula in context.