The rate at which electric energy is transferred by an electric circuit is defined as:

• A. Electric Charge
• B. Voltage
• C. Electric Power
• D. Resistance

Answer: (C)

Power is the rate at which energy is transferred. In an electric circuit, this describes how quickly electrical energy is delivered to a component or converted into other forms. It’s defined by P = VI, where V is the voltage (potential difference) and I is the current, so higher voltage or current means more energy per second being moved. The unit is the watt, which is one joule per second. For context, electric charge measures how much electricity is present (coulombs), voltage is the push that drives charges, and resistance is what impedes flow. Power can also be expressed as P = I^2R or P = V^2/R, depending on which quantities you know. Thus, the rate of energy transfer in a circuit is electric power.