A Quick Introduction to Electricity
Circuit
Conductor
Current
Dry cell
Electrical Field
Electrical Power
Electrolyte
Chapter 21
A closed path thru which electrons
(electricity) flow
A material that allows electrons to flow
easily
The flow of electrons thru a wire
measured in amperes (amps)
A battery (power source) with an
electrolyte made of a thick paste.
The area surrounding an electron that a
force on anything nearby with an electric
charge.
A solution that conducts electricity
Electroscope
A device used to detect electric charges
Insulator
A material that does NOT allow electrons
to flow easily
The unit used to measure electrical energy
Potential difference = current X resistance
An electric circuit where current can flow
thru more than one path
Kilowatt-hour
Ohm’s Law
Parallel circuit
Potential
difference
Voltage; the difference in potential energy
between 2 points
Resistance
Slowing or stopping the flow of electrons
An electrical circuit where current can
flow thru only one path
Series Circuit
A Quick Introduction to Electricity
Chapter 21
Static
electricity
The net build-up of charges on an object;
electricity that does NOT flow
A battery (power source) whose
electrolyte is a liquid
Wet cell
Circuit Symbols:
Switch
Ammeter
Resistance
Voltmeter
Load
Power Source
(battery or outlet)