1. Coulomb’s Law & Static Electricity
JEOPARDY
Ohm’s Law
Circuits I
Circuits II
Potpourri
Coulomb’s Law & Static Electricity
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2. Answer
This is the equation for ohm’s law.

3. Question
I = V/R

4. Answer
Find the missing information:

5. Question
I = 4 Amps (units must be included)

6. Answer
In the circuit below, if someone tripled the resistance, what would the current be?

7. Question
The current would be 4 Amps.

8. Answer
What is the relationship between voltage and current? Give a real example of how we could see this in the lab.

9. Question
As voltage increases, current increases. This is a direct relationship. If we add a second battery to the circuit, the light increases in the light bulb due to more current.

10. Find the missing information in the circuit below:
Answer
Find the missing information in the circuit below:

11. Question
R = 12 Ohms

12. Answer
Draw a circuit with a battery, a switch and 2 bulbs.

13. Question

14. Double JEOPARDY
How much do you wish to wager?

15. Double JEOPARDY Answer
Draw a circuit with 1 battery, 3 bulbs and 2 switches. 1 switch should control the entire circuit and 1 switch should only control one bulb.

16. Double JEOPARDY Question

17. Always leave blank!!

18. Answer
List two difference between a parallel circuit and a series circuit.

19. Question Paralell: - multiple pathways
- lights stay on if one is removed
- bulbs brighter
Series
- one pathway
- all lights go out if one is removed
- bulbs dimmer

20. Answer
Which of the following circuits has a short circuit?

21. Question B.

22. Answer
If bulb 2 and 9 were removed, which bulbs would remain on?

23. Question
1, 5, 6 and 4 would remain on.

24. Answer
Explain why the light won’t come in both circuits.

25. Question
A – the circuit is open. Electricity cannot make it back to the other side of the battery.
B – the battery are pushing against each other.

26. Answer Give 2 examples of a conductor and 2 examples of an insulator.
20 bonus points – Why are conductors able to conduct electricity?

27. Question Conductors – any 2 metals or metal objects
Insulators – most non-metal objects
Conductors allow electricity to flow because its electrons are free to move.

28. Answer
Draw the circuit and find the short in the circuit. Circle it.

29. Question

30. Answer
Describe what a potentiometer does and how it works.

31. Question
A potentiometer varies the resistance in a circuit. This causes the current to decrease (high resistance) or increase (low resistance.
The effect of this could be dimming a light or increasing/decreasing the volume of music.

32. Answer
How many paths are there for electricity to flow in the circuit below?

33. Question
5 paths

34. Answer
Why can a short circuit lead to a fire? Be very specific.

35. Question
As the current moves faster, there is more friction, which creates thermal energy. This thermal energy can cause things to catch on fire.

36. Answer
Draw a free body diagram of a crumb as it is being pulled off the table by a charged balloon.

37. Question

38. Answer
Imagine a river that has a waterfall at the beginning, rocks and water flowing through it. Create an analogy between current, voltage and resistance and the parts of the water fall.

39. Question Waterfall = voltage Water flowing = current
Rocks = resistance

40. Answer
Draw a picture of where the leads need to be placed to measure current, voltage and resistance.

41. Question

42. Answer
Why do two balloons that have been charged push away from each other?

43. Question
They both have negative charge and like charges repel away from each other.

44. Answer
What is it called when an object builds an electric charge because it touched another object?

45. Question
Charging by contact.

46. Answer
Draw a picture of an object that has been charged by induction.

47. Question

48. Answer
Two objects are 4 m apart. One object has a charge of 3 C and the other has a charge of 12 C. Find the electric force between the two objects (use 9000 for K).

49. Question
20,250 Netwons

50. Answer
If both objects below have the same charge and are experiencing an electric force of 50,200 Newtons, what is their individual charge? (Use 9,000 for K).

51. Question
11.8 C

52. Answer
Draw a free body diagram of a charged balloon stuck to the ceiling. Label the forces.

53. Question