## PHYS208 Fundamentals of Physics II

### Results of First Minute Paper - Remaining Questions:

1. I'm having trouble understanding the integrals for different situations; i.e., I understand the integral for a uniformaly charged ring but I get confused when the shape changes and the point P moves around.

2. I don't understand how to tell if circuits are in parallel or series sometimes.

3. What specific things do we need to know for the test? If we are able to do the homework, should we, in theory, be able to do well on the test?

4. ...

5. What have you done the last two days? The integrals were complicated and I see what the variables were there for but why did we do it? Also why are you always using the word "infinitesimal"?

6. I would not say that I don't have any questions, I just don't have enough time or paper to write them!

7. How does one go from absolute beginning to final answer of determining electric fields of charge distributions? Maybe one difficult problem worked out completely and all steps explained as to how to do them and WHY we are doing them...

8. Electric potential vs. electric potential energy

9. Simplifying complex circuits

10. ...

11. I have no questions at this time.

12. I still don't understand some circuit problems involving more that one battery and the way current flows due to that. In the book, they way that you can choose it arbitrarily but somehow I always get the signs wrong when using the loop rule.

13. ...

14. ...

15. What is electric potential difference? What the HELL IS IT?

16. I would like to see you go over how to set up integrals when finding the electric field from a line of charges.

17. I am still a little sketchy on defining electric fields at a particular point.

18. ...

19. Calculating electric fields

20. The 243 calc

21. Electric charge over disk

22. Implications of Binomial theorem.

23. I still don't completely understand resistivity in circuits.

24. ...

25. Can not just think of one.

26. Concepts are not tough.

27. How does the Flux Capacitor work?

28. Why not Green's theorem?

29. #41, Ch. 27 has really got me confused; problems like this tenc to confuse me.

30. The quiz last Friday

31. What exactly is the relationship between dipoles and the derivative of electric fields?

32. Not sure at this time

33. How do you apply the binomial theorem to an actual problem?

34. ?

35. I don't fully understand how to find the direction of electric fields.

36. Electric fields

37. What exactly is going on in the electric field, electric dipole?

38. I have no idea what's going on today: Gauss's law.

39. Don't understand this concept. Ring of charge? Distribution of charge?

40. How do these formulas correlate to more specific examples as in homework and TESTS?!!

41. ?

42. ...

43. I still am not sure about the electric field and the effects of dipoles in them.

44. Calculus part of electric field

45. Calculus part of electric field.

46. ...

47. ...

48. Disks and rings of charge

49. I want to understand the calculus of these problems better.

50. Could you do more examples; I'm a person that learns through lots of examples.

51. The actual integrations of the problems.

52. Electric field through disk, ring, or line of charge.

53. First quiz

54. The whole process of calculating the electric fields.

55. Calculating electric potential from point charges.

56. Do we need to memorize all these equations, or can we have a formula sheet on the exam? If we did not have to memorize, I think I would grasp these concepts much better.

57. Don't understand Gauss's law.

58. ...

59. I don't understand multiloop circuits.

60. Many questions -- mostly on homework problems and how to set them up.

61. Too many questions to just ask one; you aren't always clear as to what you are doing.

62. I would ask to get a better understanding of electric charges.

63. I have trouble understanding what the book problems are saying. Maybe you could do some out of the book during lecture. (Not necessarily the one you assign.)

64. ...

65. ...

66. What happens to the resistor R1 when the switch is closed?
I know that was a concept check, but I didn't write down the answer. Tv'e had 3 years of electronics and circuits in high school, and I remember the answer you gave in class totally confusing me, based on the things I remember from H.S. I don't get it.

67. I have a lot of questions; it'll take a book to write them down.

68. Binomial expansion.

69. ...

70. Electric fields. It is a hard concept to get a hold of especially becuse I can't see it.

71. The integrals used in distributed charges confuse me.

72. I am still confused about electric potential and field lines.

73. Still slightly confused on circuits.

74. I have been understanding the materials for the most part in class; however, I have not been keeping up with homework as much as I would like. Therefore I'm not quite sure about fully understanding all the topics covered so far.

75. Discuss electric field direction with a point charge.

76. dc circuit analysis still has me confused.

77. I am still a little fuzzy on the charge distributions and dipoles. Setting the integrals up and solving them has been a chore for me. Perhaps in the homework hints and answers you could show what the set-up integral looks like.

"http://www.physics.udel.edu/~watson/phys208/minute1c.html"
Last updated Sept. 23, 1997.
Copyright George Watson, Univ. of Delaware, 1997.