What unit is resistance measured in?

What unit is resistance measured in?

• A. Volts
• B. Amperes
• C. Watts
• D. Ohms

Answer: (D)

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.)