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Alternating and Direct Currents
Conductors and Insulators
Resistance
Voltage
Ohm's Law
100
This current only flows in one direction.
What is a direct current?
100
A material through which charge can flow easily.
What is an electrical conductor?
100
Collisions of electrons and ions create.......
What is kinetic and thermal enrgy?
100
The difference in electrical potential energy between two places in an electric field.
What is potential differece?
100
Named after the German scientist Georg Ohm.
Where does the ohm originate?
200
This current is affiliated with most battery operated items.
What is a direct current?
200
A material through which charge cannot flow easily.
What is an electrical insulator?
200
Opposition to the flow of chargesin a material.
What is resistance?
200
Another name for potential difference....
What is voltage?
200
V= I x R
What is the formula for Ohm's law?
300
Is a flow of electric charge that regularly reverses its direction.
What is an alternating current?
300
Something made up of ions in a lattice.
What is a metal?
300
A material that has almost zero resisance when it is cooled to low temperatures.
What is a superconductor?
300
A device that converts chemical energy to electrical energy......
What is a battery?
300
Voltage
What is not the same everywhere in a circuit according to Ohm?
400
A battery operated mechanism that creates light with the flick of a switch.
What is a flashlight?
400
Metals such as copper and silvers are all good....
What is are electrical conductors?
400
A materials thickness, length, and temperature affect its............
What is resistance?
400
Joules per coulomb, or volts.
What is potential difference measured in?
400
The current.
What does increasing the voltage increase?
500
An electric current in your home and school.
What is an alternating current?
500
Wood, plastic, rubber, and air are all good....
What are electrical insulators?
500
The SI unit of resistance is........
What is the ohm?
500
Increases the electrical potential energy of electric charges.
What is a voltage source?
500
A multimeter.
What is used to measure current, voltage, or resistance?