Final answer:
The wattage requirement for a circuit using the formula W=VxA is true. This equation shows that power (in watts) is the product of voltage (in volts) and current (in amperes).
Step-by-step explanation:
The wattage requirement for each individual circuit uses the formula W=VxA is indeed true. The equation represents the relationship between wattage (power), voltage (V), and amperage (A). In this context, W stands for wattage, V represents voltage in volts, and A represents current in amperes, which is the rate of flow of electric charge. Therefore, when you know the voltage across and the current flowing through a circuit, you can calculate the power in watts by multiplying them, according to the formula P = IV.
As an example, households in the U.S. often have circuit breakers rated at 15 or 20 Amps for regular power outlets and at a voltage of 120 V, this corresponds to a maximum power of 1,800 W or 2,400 W, respectively.