Science Circuits, Electrostatics, and Fields Definitions

Newton's Law of Universal Gravitation

Every particle with mass in the universe attracts every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres

Weight

The gravitational force the Earth exerts on any object on or near its surface

Gravitational field

The force acting per unit mass

Coulomb's law

Two point charges exert forces on each other. The force is directly proportional to the product of the charges and inversely proportional to the square of the distance between the charges

Electric field at a point

The force per unit positive charge

Potential difference

The work done per unit positive charge

Current

The rate of flow of charge

Ohm's Law

The current through a conductor is directly proportional to the potential difference across the conductor at constant temperature