Which law describes the relationship between voltage, current, and resistance?

Ohm's law articulates the fundamental relationship between voltage, current, and resistance in an electrical circuit. It is mathematically expressed as V = I × R, where V represents voltage, I is the current in amperes, and R is the resistance in ohms. This law indicates that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor.

Understanding Ohm's law is essential for professionals in electrical engineering, electronics, and related fields, as it serves as a foundational principle for analyzing electrical circuits, performing troubleshooting, and designing electrical systems. The significant roles of voltage and resistance in controlling current flow are fundamental concepts in both theoretical and applied electrical work.