Miscellaneous things…
Practice Problem: 31 Jan 2012
1 Feb 2012: NOTE!
Ch. 27 #43: keep in mind that the electric field inside a conductor is always zero, so there's some little piece of information that this problem is hiding from you; you've got to assume something else exists somewhere to make things work out! Do you see what it is?
Quiz 1 Solutions (PDF, 3.6 Mb)
Bogus Question list:
29.3: answer should be -200 V
29.37 This question (it wasn't assigned, but some of you have worked on it) wins the BOGUS award; the only way to do the problem (at the level of this course) is to assume that the three conductors are actually infinite planes. But the question says to consider the planes as 2cm x 2cm, which last I checked is less than infinite in area.
29.41: the questions should say "estimate" the electric field magnitude, because they really don't provide enough information to exactly calculate the field.
30.1 the answer in the back is correct: 3.0 d = 3.0 days !
30.11 Answer should be 0.13 C
31.5 Plot in back of book for part (b) is bogus.
32.65 part a: Answer should be 96.515 Volts
33.33 Both part a and b should be negative! (book has part b as positive, and this is wrong!)
Practice Final Exam: From Spring 2011
