What is Ohm's Law and its equation?

Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage, current, and resistance in an electrical circuit. The correct equation for Ohm's Law is expressed as V = I × R, where V represents voltage (measured in volts), I represents current (measured in amperes), and R represents resistance (measured in ohms).

This equation clearly defines how voltage is directly proportional to the product of current and resistance. When the current flowing through a conductor is increased, provided the resistance remains constant, the voltage across that conductor will also increase correspondingly. This relationship is pivotal in designing and analyzing electrical circuits, as it allows for the calculation of one variable when the other two are known, making it essential for anyone studying HVAC systems that utilize electrical components.

In the context of the other options, they either misrepresent the relationships between voltage, current, and resistance or present them in a form that does not align with the accepted formula for Ohm's Law. Such variations do not accurately describe how these quantities interact according to the principles of electricity.