What is Ohm's Law?

Ohm's Law is a fundamental principle in electrical engineering that defines the relationship between voltage, current, and resistance in an electrical circuit. According to Ohm's Law, the voltage (V) across a conductor between two points is directly proportional to the current (I) flowing through it and inversely proportional to the resistance (R) of the conductor. This relationship is mathematically expressed as V = I × R.

In this equation, voltage is measured in volts (V), current in amperes (A), and resistance in ohms (Ω). This formula illustrates that if you increase the current while keeping the resistance constant, the voltage will also increase proportionally, which is vital for understanding how circuits function.

The other choices present incorrect formulations of Ohm's Law. The incorrect options either suggest incorrect relationships such as division or addition rather than the correct multiplication needed to express the relationship defined by Ohm's Law. Understanding this concept is crucial for any work involving electricity, as it dictates how to analyze and design electrical circuits effectively.