What do we call power that is dissipated by resistance, measured in watts?

Power that is dissipated by resistance in an electrical circuit is commonly referred to as real power, active power, or true power, and they all essentially describe the same concept in the context of AC or DC circuits. This power is measured in watts and represents the actual power consumed by the devices in a circuit to perform work.

Real power accounts for energy that can be harnessed to perform useful tasks, such as turning on appliances or lighting. It represents the portion of power that gives energy to the circuit's load and is consumed in a resistive manner, thereby creating heat and doing work effectively. Active power is often used interchangeably with real power and emphasizes the power that is transformed into mechanical energy or heat. True power consolidates these ideas and reaffirms that it encompasses the actual power used in a circuit.

Since all three terms are applicable to the power dissipated by resistance, the answer that encompasses all of them is the option that indicates all of the listed terms are correct representations of this power form. Thus, identifying these terms collectively as referring to the same principle helps in understanding their role in electrical systems.