Which unit is used to measure electrical resistance?

Which unit is used to measure electrical resistance?

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

Answer: (A)

Resistance is measured in the ohm. This unit comes from Ohm's law, which relates resistance to voltage and current as R = V / I. An ohm is defined as the resistance between two points of a conductor when a constant potential difference of one volt, applied to those points, would produce a current of one ampere. In other words, amps measure current, volts measure voltage, and watts measure power, while resistance specifically uses the ohm.

Resistance is measured in the ohm. This unit comes from Ohm's law, which relates resistance to voltage and current as R = V / I. An ohm is defined as the resistance between two points of a conductor when a constant potential difference of one volt, applied to those points, would produce a current of one ampere. In other words, amps measure current, volts measure voltage, and watts measure power, while resistance specifically uses the ohm.