Electrical power is defined as:

Electrical power is defined as:

• A. The energy stored in a battery.
• B. The current in a circuit.
• C. The resistance of a conductor.
• D. The rate at which an appliance uses energy, measured in Kilowatts (kW).

Answer: (D)

Power in electricity is the rate at which energy is transferred or used. It tells you how quickly a device consumes energy, and it’s measured in watts (W) or kilowatts (kW). Think of it as energy used per second; 1 watt means 1 joule of energy used every second. The power rating of a device shows this rate of energy use. If you know the voltage and the current, you can find power with P = V × I, which links how strong the push (voltage) and how much charge flows (current) to how fast energy is being used. This helps distinguish power from energy stored, which is a quantity of energy (not a rate), and from current or resistance alone, which describe other aspects of the circuit but not how fast energy is used. For example, a device connected to 120 V drawing 0.5 A uses P = 120 × 0.5 = 60 W, meaning it uses energy at a rate of 60 joules per second.

Power in electricity is the rate at which energy is transferred or used. It tells you how quickly a device consumes energy, and it’s measured in watts (W) or kilowatts (kW). Think of it as energy used per second; 1 watt means 1 joule of energy used every second. The power rating of a device shows this rate of energy use. If you know the voltage and the current, you can find power with P = V × I, which links how strong the push (voltage) and how much charge flows (current) to how fast energy is being used. This helps distinguish power from energy stored, which is a quantity of energy (not a rate), and from current or resistance alone, which describe other aspects of the circuit but not how fast energy is used. For example, a device connected to 120 V drawing 0.5 A uses P = 120 × 0.5 = 60 W, meaning it uses energy at a rate of 60 joules per second.