Topic 9: Electricity - Circuits

The flow of electric current in wires, motors, light bulbs and other devices

• electricity

• current

• alternating current

• direct current

The flow of electrons through a wire or conductor

• electricity

• current

• alternating current

• direct current

Current that reverses direction

• electricity

• current

• alternating current

• direct current

Current that flows in one direction

• electricity

• current

• alternating current

• direct current

Electrons flow from higher to lower concentration

• potential difference (voltage)

• resistance

• conductivity

• conductor

The tendency of an object or material to oppose the flow of electrons

• potential difference (voltage)

• resistance

• conductivity

• conductor

Property of a material to allow charge to flow

• potential difference (voltage)

• resistance

• conductivity

• conductor

Allows charge to flow with minimal resistance

• potential difference (voltage)

• resistance

• conductivity

• conductor

Allows some charge to flow

• conduction

• conductor

• semiconductor

• insulator

Allows very little charge to flow

• conduction

• conductor

• semiconductor

• insulator