Chapter 20 Electricity Vocabulary ( electric current and ohms law)
Battery
A device that converts chemical energy to electrical energy
Electrical conductor
A material in which electric charge can flow easily
Electrical insulator
A material in which electric charge cannot flow easily
Superconductor
A material that has almost zero resistance when it is cooler to low temperatures
Direct current
Electric charge only flows in one direction
Alternating current
Electric charge that regularly reverses direction
Resistance
Opposition to the flow of electrical charge in a system
Electric current
The continuous flow of electric charge
Potential difference
The difference in electrical potential energy between two places in an electrical field
Ohms law
The voltage in a circuit equals the product of the current and resistance
Voltage
This is another word for potential difference