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.