What are ohms?

Ohms are the units used to measure electrical resistance in a circuit. Resistance is a property that describes how much an object opposes the flow of electric current. According to Ohm's Law, which defines the relationship between voltage (V), current (I), and resistance (R), the resistance can be calculated using the formula R = V/I. This concept is fundamental in electrical engineering and mechanics, as understanding how components resist electrical flow is crucial for designing and analyzing circuits effectively.

In this context, options related to current flow, voltage, and power deal with different aspects of electrical circuits. Current flow is measured in amperes (A), voltage is measured in volts (V), and power is measured in watts (W). Each of these quantities plays a role in the behavior of electrical systems, but they are distinct from resistance, which is specifically quantified in ohms. Therefore, the correct focus on resistance with the measurement of ohms provides foundational knowledge for anyone studying electrical systems and their properties.