In Ohm's law calculations, which letter represents current?

In Ohm's Law calculations, the letter that represents current is "I." This designation traces back to the early days of electricity and is used universally in electrical engineering. Current, measured in amperes (A), reflects the flow of electric charge in a circuit and is a fundamental concept in understanding how electrical systems operate.

Ohm's Law itself states the relationship between voltage (V), current (I), and resistance (R), mathematically expressed as V = I × R. In this formula, "I" is critical in determining how much current flows through a circuit based on a given voltage and resistance. Understanding this relationship is essential for anyone working with electrical systems, as it helps in calculations and design considerations related to safety and efficiency.