The unit symbol for electrical resistance is which symbol?

The unit symbol for electrical resistance is which symbol?

• A. Ω
• B. V
• C. A
• D. W

Answer: (A)

Electrical resistance is measured in ohms, symbolized by the Greek letter Omega (Ω). This symbol represents the ohm, the unit used in Ohm’s law where resistance R = V / I. The ohm is defined as the resistance between two points of a conductor that, when a constant potential difference of one volt is applied, produces a current of one ampere. The other common symbols correspond to different quantities: volt (V) for potential difference, ampere (A) for current, and watt (W) for power. So Ω is specifically the symbol for resistance.

Electrical resistance is measured in ohms, symbolized by the Greek letter Omega (Ω). This symbol represents the ohm, the unit used in Ohm’s law where resistance R = V / I. The ohm is defined as the resistance between two points of a conductor that, when a constant potential difference of one volt is applied, produces a current of one ampere. The other common symbols correspond to different quantities: volt (V) for potential difference, ampere (A) for current, and watt (W) for power. So Ω is specifically the symbol for resistance.