Charges
Electric Fields/Force
Ohms Law, P=IV, and junction rule
Circuits A
Circuits B
Electrifying puns
100
What happens if you put a positive charge near a negative charge?
They will attract.
100
This is the electric force between 2 C and 8 C point charges that are 2 m apart.
3.6E10 N
100
What were the analogies for voltage, current, and resistance?
Voltage: Hill
Current: Ball rolling down hill
Resistance: Roughness of hill
100
What type of circuit is this?
Series
100
What type of circuit is this?
Parallel
100
What's the biggest problem with electricity jokes?
None of them are current.
200
If something is negative, what type of subatomic particles does it have extra of?
electrons
200
What is the electric force between a 7E-6 C and a 8E-5 C point charges that are 0.001 m apart?
5.04E6 N
200
A 5 Ω resistor is connected to a 20 V battery. What is the current running through the resistor?
4 A
200
What stays constant in a parallel circuit?
Voltage
200
What stays constant in a series circuit?
Current
200
Why did the wire have no self control when it came to electrons?
It couldn't resist
300
How many extra electrons do I have if the net charge is -4.8E-19 C?
3 electrons
300
What is the strength of the electric field if a 3 C charge experiences a force of 15 N?
5 N/C
300
A 300 W lightbulb is connected to a 120 V outlet. How much current runs through the bulb?
2.5 A
300
Three resistors are in parallel, R1 = 5 Ω, R2 = 20, and Ω R3 = 7 Ω. What is their net resistance?
2.55 Ω
300
Three resistors are in series, R1 = 5 Ω, R2 = 20, and Ω R3 = 7 Ω. What is their net resistance?
32 Ω
300
Why do electrons move away from the negative side of a battery?
They find it re-volt-ing.
400
How many extra protons are in something with 3 C of charge?
1.875E19 protons.
400
The electric force between two charged particles is 8 N. What is my new force if I double one charge and quadruple the second charge?
64 N
400
A 10 Ω resistor is connected to a 5 V battery. What is the current running through the resistor? What is the power dissipated by the resistor?
0.5 A and 2.5 W
400
What type of circuit still works even if one bulb breaks?
Parallel
400
I hook up 3 lightbulbs in series and another 3 lightbulbs in parallel in a separate circuit. What happens to the bulb brightness in each circuit if I add another bulb?
Series: Brightness goes down
Parallel: Brightness goes up
400
What did the electron say to the resistor after it used some of its energy?
Watts the matter with you!
500
How many extra charges do I have (and what type) when the net charge is -6 C.
3.75E19 electrons
500
The force between two charges is 8 N. What is the new force when the distance between charges decreases to 1/2 its original value?
32 N
500
What is the value of I4 in the following image?
4 A
500
What is the net resistance? What is the current and through R1 and what is the voltage across R2?
450 Ω, 0.02 A, and 6 V
500
What is the net resistance in the following circuit? What is the voltage across the R2? What is the current through R2?
25.71 Ω, 9 V, and 0.2 A
500
Why couldn't the lightbulb stop the electron from getting away?
It didn't have the power needed to resist.