To express the relationship between watts, volts, and amps, which equation is used?

The equation that expresses the relationship between watts, volts, and amps is W = IV. This equation indicates that power (measured in watts) is the product of current (measured in amps) and voltage (measured in volts).

In the context of electrical circuits, power is a crucial parameter because it represents the rate at which energy is consumed or produced. When you multiply the current flowing through a circuit (how much charge is moving) by the voltage (the electric potential difference), you obtain the total power being used in that circuit.

This relationship is foundational in electrical engineering and is vital for understanding how electrical systems function. For instance, if you know the current flowing through a device and the voltage across it, you can easily calculate how much power the device is consuming, which is essential for system design and troubleshooting.