homework 04 – KANUNGO, ANIL
1
Latest unpenalized work: Sep 10 2007 Mon
day 04:00 (after this date you can not make a
perfect score). Work cutoff: Sep 11 2007, 4:00
am.
Question 1, chap 23, sect 3.
part 1 of 4
10 points
Consider symmetrically placed rectangular
insulators with uniformly charged distribu
tions of equal magnitude as shown in the fig
ures.
x
y
++++

Find the net electric field at the origin.
1.
aligned with the positive
y
axis
2.
aligned with the positive
x
axis
3.
aligned with the negative
y
axis
4.
nonzero and not aligned with either the
x
 or
y
axis
5.
aligned with the negative
x
axis
6.
zero with the direction undefined.
Question 2, chap 23, sect 3.
part 2 of 4
10 points
x
y
++++
++++
In the figure above what is the net field at
the origin?
1.
aligned with the negative
y
axis
2.
aligned with the positive
y
axis
3.
nonzero and not aligned with either the
x
 or
y
axis
4.
aligned with the negative
x
axis
5.
zero and the direction is undefined
6.
aligned with the positive
x
axis
Question 3, chap 23, sect 3.
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 Fall '08
 Turner
 Work, Electric charge, 5 percent, ANIL Latest

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