Download Understanding Electricity

Circuit - A closed loop of conductors through
which charges can flow

Conductor - A substance through which
electrical charges can easily flow

Insulator – A material through which electric
charges cannot move

Short Circuit - A low-resistance connection
established by accident or intention between
two points in an electric circuit.

 Current
– A flow of electric charges
(A.C. or D.C., alternating or direct)
 Voltage
– The pressure behind the flow
of electrons in a circuit
 Switch
- A device that closes or opens
a circuit, thereby allowing or preventing
current flow