Electricity and Magnetism (copy)

Definitions

Electricity

Electricity

A form of energy and a good way to transport electricity from one place to another. Caused by moving charged particles (flow of electrons).

Conductor

Are materials that allow the flow of charge to flow through them

Insulators

Are materials that do not allow the flow of charge to flow through them

Static electricity

A stationary electric charge, caused by produced most commonly by fiction.

Current Electricity

A flow of charged particles

Electric Circuits

A path for electric charge to flow along

Current

A measure of the flow of electrons at a point in a circuit

Law of Conservation of Charge

Electric charge can not be created or destroyed, the amount of charge remains the same. When an object changes its charge it doesn’t destroy it but transfers it.

Voltage

Is a measure of the difference in electrical potential energy between two points in a circuit.

Circuit Breakers

A safety device that interrupts the flow of current to a circuit

Switch

A switch that turns off contact of the wires is broken so no more current can flow through

Magnetism

Is the force exerted by magnets when they attract or repel each other.

Magnetic field

The area around a magnet in which the effect of magnetism is felt.

Magnet

A material that produces magnetic field

Electromagnets

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.