Radiation Physics Worksheet Week 2: The XR Circuit

These flashcards cover key concepts related to electrostatics and electrodynamics as discussed in the Radiation Physics Worksheet.

Electrostatics

The study of stationary electric charges.

Electrodynamics

The study of electric charges in motion.

Electric Charge

A property of matter that causes it to experience a force when placed in an electromagnetic field.

SI Unit for Electric Charges

Coulomb.

Coulomb

A unit of electric charge; 1 Coulomb equals approximately $6.25 imes 10^{18}$ electrons.

General Principles of Electrostatics

1. Like charges repel, unlike charges attract; 2. The electrostatic force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them; 3. Electric charges reside only on the external surface of conductors; 4. The concentration of charges on a curved surface of a conductor is greatest where the curvature is greatest.

Ways an Object Can Be Electrified

1. Contact: touching a charged object to a conductor; 2. Friction: rubbing together; 3. Induction: uncharged metal objects shift electrons when brought into an electric field of a charged object.

Electrification

The process of gaining a net positive or net negative charge.

Electric Current Movement

For electric current to flow, electric potential must exist.

Flow of Electrons in a Circuit

Electrons flow from an area of abundance to an area of deficiency.

Electric Potential

Potential energy that a unit of charge has at a point in an electric field.