What is Ohm's law?

Ohm's law describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. The correct formulation states that voltage is equal to the product of current and resistance, expressed as V = I x R. This means that if you know two of these quantities, you can calculate the third. For instance, if you increase the current while keeping resistance constant, the voltage will also increase proportionally.

This fundamental principle is critical in electrical engineering and physics, as it helps in understanding how electrical circuits operate and allows for the design and analysis of circuits in various applications. The clarity of this relationship underlines the linear nature of Ohm's law, demonstrating that voltage increases as either the current or resistance increases, providing a predictable outcome that is essential for both theoretical studies and practical applications.