Which of the following is measured in ohms?

Resistance is measured in ohms, which is a fundamental unit in the electrical domain named after the German physicist Georg Simon Ohm. Ohms quantify how much a material opposes the flow of electric current, which is crucial for analyzing and designing electrical circuits.

Understanding the role of resistance is essential for electricians and engineers, as it directly influences how safely and effectively electrical systems operate. Ohm's Law states that the voltage (measured in volts) across a conductor between two points is directly proportional to the current (measured in amperes) flowing through it and inversely proportional to the resistance. This foundational relationship among voltage, current, and resistance is key to circuit analysis and troubleshooting.

The other terms—voltage and current—are measured in different units: voltage is measured in volts and current in amperes. This distinction reinforces the importance of recognizing that resistance, rather than voltage or current, is specifically measured in ohms.