Consider the following pairs.

Electrical Parameter           Measuring Unit

A. Power                               Watts

B. Current                               Volt

C. Frequency                           Hertz

D. Resistance                          Ampere

Which of the above pairs are correctly matched?

Correct Matches A. Power — Watts: Power is the rate at which work is done or energy is transformed. In an electrical circuit, C. Frequency — Hertz: Frequency is the number of cycles per second in an alternating current (AC) wave .Incorrect Matches B. Current — Volt: This is incorrect. The unit for Current is the Ampere (A). The Volt (V) is the unit for Voltage (Potential Difference).D. Resistance — Ampere: This is incorrect. The unit for Resistance is the Ohm . As mentioned above, the Ampere is the unit for Current.