What unit is resistance measured in?

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Study for the Con Edison Basic Electric Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What unit is resistance measured in?

Explanation:
Resistance tells you how much a component resists the flow of current. The unit for resistance is the ohm, symbolized by the Greek letter omega. This ties directly to Ohm’s law, R = V / I, so resistance is the ratio of voltage to current. By definition, one ohm is the resistance between two points of a conductor when a constant potential difference of one volt, applied to those points, produces a current of one ampere. So the unit for resistance is ohms. (Voltage is measured in volts, current in amperes, and power in watts.)

Resistance tells you how much a component resists the flow of current. The unit for resistance is the ohm, symbolized by the Greek letter omega. This ties directly to Ohm’s law, R = V / I, so resistance is the ratio of voltage to current. By definition, one ohm is the resistance between two points of a conductor when a constant potential difference of one volt, applied to those points, produces a current of one ampere. So the unit for resistance is ohms. (Voltage is measured in volts, current in amperes, and power in watts.)

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