What is the power used by a 12-volt circuit with 24 amperes of current?

To determine the power used by a circuit, you can use the formula:

Power (P) = Voltage (V) x Current (I).

In this scenario, the voltage is given as 12 volts, and the current is 24 amperes. When you multiply these two values together, the calculation is:

P = 12 volts x 24 amperes = 288 watts.

This means the correct answer is indeed 288 watts. This calculation is fundamental in electrical engineering, as it allows you to understand how much power is consumed by a circuit, which is crucial for designing circuits and selecting components that can handle the required power levels.