Physics Vocabulary

Flashcards for key physics vocabulary terms.

Friction

A contact force that opposes motion; caused by objects rubbing against each other

Alternator

A device that converts kinetic energy into electrical energy

Circuit

A closed path for transmitting electricity, including connecting wires and components connected to a power source

Component

A device in a circuit that uses electrical energy

Electron

A negatively charged particle in an atom

Load

A component of a circuit that uses electrical energy

Conductor

A material that allows the movement of charge

Current

A measure of the flow of charged particles such as electrons in a circuit

Insulator

Material that resists the movement of charge

Potential Difference

The difference in potential energy (voltage) between two points in a circuit

Resistance

A measure of the opposition to flow of electric current

Voltage

A measure of electric potential energy

Ammeter

A device that measures electric current

Ohm's Law

A scientific law which demonstrates that the current through a conductor between two points is directly proportional to the voltage across the two points

Voltmeter

A device that measures potential difference (voltage)

Parallel Circuit

A circuit in which all components are connected between the same points in branches, so the current divides into more than one path

Reciprocal

The reciprocal of a number is 1 divided by that number

Series Circuit

A circuit in which components are connected in a line, so the current has only one path to take

Resistance

Opposition to the flow of electric current.