What is the unit of electrical power?

• A. Volt
• B. Watt
• C. Ohm
• D. Joule

Answer: (B)

The unit of electrical power is the Watt. Power in electrical terms is defined as the rate at which electrical energy is transferred by an electric circuit. It is calculated by multiplying the voltage (potential difference) by the current (flow of electric charge). The formula used to express this relationship is:

Power (P) = Voltage (V) × Current (I)

Where the power is measured in Watts. One Watt is equivalent to one Joule per second, which reflects the energy transferred per unit time.

The other options represent different electrical concepts: a Volt is the unit of electrical potential, an Ohm is the unit of electrical resistance, and a Joule is a unit of energy. Each of these units plays a vital role in understanding electricity, but it’s the Watt that specifically quantifies power.