Electrical resistance is measured in which unit?

Electrical resistance is measured in ohms, which is the standard unit of measurement in electrical engineering and physics. Ohms quantify how much a material opposes the flow of electric current when a voltage is applied. According to Ohm’s Law, the relationship between voltage (in volts), current (in amperes), and resistance (in ohms) can be expressed as V = I × R, where V stands for voltage, I for current, and R for resistance. This clear relationship underlines that resistance is fundamentally characterized by the ohm, making it the appropriate answer for this question.

Other choices represent different electrical concepts: volts measure electrical potential difference, watts indicate power (the rate of doing work or the rate of energy transfer), and amperes signify the flow of electrical current. Understanding these distinctions is crucial for comprehending the broader context of electrical measurements.