Electrostatics
Electric Potential
Current
magnets
Circuits
100
What is the name of the subatomic particle that has a negative charge?
Electron
100
Electric potential is defined as....
The amount of electric potential energy per charge
100
What do we call the flow of electric charge? What symbol do we use for this? What is it's unit?
Current I Amps
100
If several lights are wired in series and one of the bulbs burns out, what will happen to the other lights? Why?
They will go out as well. Because there is only one loop and it is now broken.
100
For a parallel circuit, what will happen to the rest of the bulbs if one of the bulbs burns out? Why?
The other bulbs will stay lit. Because the electricity has other circuit loops it can take.
200
A positive charge will always repel a _____ charge.
positive
200
If a person does work to move a positive charge from one point to another in an electric field, what happens to the charge's electric potential?
It increases
200
For a fixed voltage (like when using a battery), if the resistance of a wire goes up, what will happen to the current that flows through it?
The current will decrease
200
In a series circuit, what happens to the brightness of the bulbs as more are added to the circuit? Why?
The bulbs will get dimmer. Because they all have to share the voltage from the battery.
200
What happens to the brightness of light bulbs wired in parallel as you add more bulbs? Why?
They will all stay bright because each bulb gets the full voltage from the battery.
300
How can you tell if an electric field is weak when looking at it's field lines?
It only has a few field lines.
300
What unit is electric potential measured in?
Volts
300
What is DC current. What is an example of something that uses DC current?
When the current flows in just one direction. A battery.
300
What is the total Resistance of a 5 Ohm, 7 Ohm, and 3 Ohm resistor wired in series?
17 Ohms
300
What is the total resistance of 5 Ohm and 4 Ohm resistors wired in parallel?
2.2 Ohms
400
Two charges are held apart by some distance. If one of the charges were to double, by what factor would the Electric Force change?
It would double
400
How much work is done on a -5 Coulomb charge if 17500 volts are acting on it?
-87500J
400
a 120V toaster draws a current of 3A. What is the resistance of the toaster?
40 Ohms
400
What is the power used by the third resistor in the first circuit of the review packet?
0.02 W
400
What is the resistance of the first resistor in the third circuit diagram in the review packet?
7 Ohms
500
Two charges are held apart a certain distance. If one of the charges triples, and the distance doubles, by what factor will the Electric Force change?
4/9
500
A particular charge moves 3.45*10^-5 m across a 63750 N/C electric field. How much electric potential is created?
2.2 volts
500
What is the job of a circuit breaker? Why do we use them?
It breaks the circuit when too much current is being drawn. This protects the wires from getting too hot and burning the house down.
500
What is the Power used by the second resistor in the second circuit diagram on the review packet?
0.54 W
500
What is the Power of the second resistor in the last circuit diagram of the review packet?
14.4 W
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