What unit is used to measure electrical resistance?

The unit used to measure electrical resistance is Ohms. Ohm is a fundamental unit in the field of electricity and electronics and is based on the relationship defined by Ohm's law, which states that the voltage across a conductor is directly proportional to the current flowing through it, with the resistance being the constant of proportionality.

Understanding this concept is fundamental in HVAC systems and electrical circuitry, as it helps in analyzing how electrical components behave and interact with each other. For instance, when designing or troubleshooting electrical circuits, knowing the resistance of various components allows for more effective system design and problem identification.

The other terms are related to different electrical measurements; Volts measure electrical potential (voltage), Amperes measure the flow of electric current, and Watts measure electrical power (the product of voltage and current). Each of these measurements plays an important role in electrical systems, but they specifically pertain to different aspects of electrical phenomena, distinct from resistance, which is what Ohms quantify.