Electric field

A vector field giving the electric force per unit positive charge at each point in space. Its direction is the force on a positive test charge.

Coulomb's law: A law giving the electrostatic force between two point charges in terms of their charges and separation. It calculates the force that defines the field of a point charge.
Electric charge: A property of matter that produces and responds to electromagnetic interactions. Charge is the source and the probe property underlying the field definition.
Capacitor: An electrical component that stores energy in an electric field between conductors. A capacitor creates a controllable field to store electrical energy.
Magnetic field: A vector field describing magnetic effects on moving charges, currents, and magnetic materials. It is the other field in electromagnetism, with distinct sources and force effects.
Electric potential: Electric potential is potential energy per unit charge at a point in an electric field. Its spatial gradient determines the field in electrostatic situations.
Electric force: The interaction force between electrically charged objects. The field expresses this force per unit test charge.
Electrostatic induction: The redistribution of electric charge in a material caused by a nearby electric field. External fields rearrange charges even without direct contact.
Gravitational field: A vector field describing gravitational force per unit mass at each point. It has a similar force-per-source definition but acts universally on mass.
Gauss's law: A law relating electric flux through a closed surface to the charge enclosed by that surface. It connects field patterns to the charge enclosed by a surface.
Vector field: A function assigning a vector to every point in a region of space. Electric fields are spatially varying vectors, not merely scalar values.

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