What formula describes the relationship between voltage, current, and resistance in an electrical circuit?

The formula that describes the relationship between voltage, current, and resistance in an electrical circuit is known as Ohm's Law. This fundamental principle defines how these three quantities interact with one another, specifically stating that the voltage (V) across a conductor is directly proportional to the current (I) flowing through it, provided that the temperature remains constant. The relationship can be expressed mathematically as V = I × R, where R represents resistance.

Ohm's Law is crucial for analyzing electrical circuits because it allows engineers and technicians to calculate one of the three values (voltage, current, or resistance) when the other two are known. This law underpins many concepts in electrical engineering and is essential for designing circuits and troubleshooting potential issues.

Other options like Kirchhoff's Law, Newton's Law, and Faraday's Law pertain to different aspects of physics and electrical engineering. Kirchhoff's Law deals with the conservation of charge and energy in electrical circuits, while Newton's Law describes motion. Faraday's Law relates to electromagnetic induction, highlighting how a changing magnetic field can induce an electric current. Therefore, these laws do not define the direct relationship between voltage, current, and resistance as explicitly as Ohm's Law does.