In a circuit with a current of 4 amps and voltage of 9 V, what is the power at that location?

To determine the power in a circuit, the formula to use is P = V × I, where P represents power in watts, V represents voltage in volts, and I represents current in amperes.

In this scenario, the voltage is 9 volts and the current is 4 amps. By substituting these values into the formula:

P = 9 V × 4 A = 36 W.

Thus, the power at that location in the circuit is 36 watts. This calculation confirms that the answer is indeed correct, as it accurately applies the basic electrical principle of calculating power. This method is essential for understanding how electrical systems operate, as power denotes the rate at which energy is consumed or utilized in a circuit.