A toaster oven is plugged into a outlet where the voltage difference is 125 V. How much power does the toaster oven use if the current in the oven is 20 A?
Use electric power equation
2500 kw(kilowatts)
100
A device used to start and stop the flow of electricity
Switch
100
A cell in which the electrolyte exists in the form of a paste, is absorbed in a porous medium, or is otherwise restrained from flowing.
Dry Cell
100
How do neutrons affect electric charge?
neutrons have no effect on electric charge
100
What are the two kinds of circuits?
series and parallel
200
A microwave is plugged into a outlet where the voltage difference is 250 V. How much power does the toaster oven use if the current in the oven is 20 A
Use electric power equation
5000 kw (kilowatts)
200
An arrangement of batteries so negative touches positive
Polarity
200
The SI unit for electrical current
Ampere
200
Electricity is changed to what kind of energy in a motor?
What is mechanical
200
What circuit has only one path for the current to follow?
Series
300
A refrigerator operates on average for 0.25 h a day.if the power rating of the refrigerator is 1,200 W, how much electrical energy does the refrigerator use in one day?
Use electrical energy equation
0.30 kWH
300
Electrons move through a battery from the ___________ terminal to the ___________ terminal
Negative,Positive
300
Tendency for a material to oppose electron flow and change electrical energy into thermal energy an light
Resistance
300
Electricity is changed to what kind of energy by a lamp?
What is light
300
What happens in a series circuit if one wire breaks?
Everything loses electric current
400
A 110 volt wall outlet supplies power to a strobe light with a resistance of 2200 ohms. How much current is flowing through the strobe light?
Ohm's law
0.05 amps
400
The unit of measure of electrical current (the push behind an electric current)
Volt
400
A device for interrupting an electric circuit to prevent excessive current, as that caused by a short circuit, from damaging the apparatus in the circuit or from causing a fire.
Circuit Breaker
400
Electricity is a form of what?
What is energy
400
What two things are needed in an electric circuit for current to flow?
It needs a source of current,electrons,& the circuit has to be complete
500
A CD player with a resistance of 40 ohms has a current of 0.1 amps flowing through it. Sketch the circuit diagram and calculate how many volts supply the CD player?
4.0 volts
500
The type of circuit found in most homes
Parallel circuit
500
States that the current in a circuit equals the voltage difference divided by the resistance.
Ohm's Law
500
Is water a conductor or insulator?
What is conductor
500
What advantages do parallel circuits have over series circuits?
If one appliance is turned off, the others stay on & you can connect more devices