What unit is used to measure electrical resistance?

What unit is used to measure electrical resistance?

• A. Volt (V)
• B. Watt (W)
• C. Ohm (Ω)
• D. Ampere (A)

Answer: (C)

Electrical resistance is measured in ohms, which is represented by the symbol Ω. The concept of resistance pertains to the opposition that a material or device presents to the flow of electric current. According to Ohm's Law, resistance (R) is the ratio of voltage (V) across a conductor to the current (I) flowing through it, expressed as R = V / I. In contrast, voltage is measured in volts (V), which refers to the electric potential difference, while power is measured in watts (W), indicating the rate of energy transfer. The ampere (A) is the unit of measurement for electric current, defining the flow of electric charge. Hence, the correct answer emphasizes the specific unit associated with resistance, distinguishing it from those related to voltage, power, and current.

Electrical resistance is measured in ohms, which is represented by the symbol Ω. The concept of resistance pertains to the opposition that a material or device presents to the flow of electric current. According to Ohm's Law, resistance (R) is the ratio of voltage (V) across a conductor to the current (I) flowing through it, expressed as R = V / I.

In contrast, voltage is measured in volts (V), which refers to the electric potential difference, while power is measured in watts (W), indicating the rate of energy transfer. The ampere (A) is the unit of measurement for electric current, defining the flow of electric charge. Hence, the correct answer emphasizes the specific unit associated with resistance, distinguishing it from those related to voltage, power, and current.