The unit of electrical power is watt. 1 W is the power consumed by a device that carries 1 A of current when operated at a potential difference of 1 V.

In physics, the electric displacement field (denoted by D) or electric induction is a vector field that appears in Maxwell's equations. It accounts for the electromagnetic effects of polarization and that of an electric field, combining the two in an auxiliary field.

Let us start with the word "electric," which comes from the noun electricity. "Electric" is an adjective; that is, a word used to describe a noun. Its simple meaning is "operated by electricity." Here are two examples. There is an electric fence around the cows in that field.

The boat runs on an electric motor. My dentist recommends I get an electric toothbrush. You use electrical when you are talking in a more general way about machines, devices, or systems that use or produce electricity. Electrical is typically used in front of nouns such as equipment, appliance, and component.