What is the relationship between watts, volts, and amperes?

The relationship between watts, volts, and amperes is expressed through the equation: power (in watts) equals voltage (in volts) multiplied by current (in amperes). This fundamental equation is a key principle in electrical engineering and is known as Ohm's Law when applied to basic electrical circuits.

When you want to calculate the power consumed by an electrical device or circuit, you can use this formula to determine how power, current, and voltage interact. For instance, if you have a device operating at a voltage of 120 volts and drawing a current of 2 amperes, you can calculate its power consumption as 240 watts, illustrating the direct multiplication relationship.

The other options do not reflect the correct mathematical relationship or concepts related to electrical power. The notion of dividing, adding, or subtracting current and voltage does not apply in this context, thus highlighting the accuracy and significance of the correct choice.