Download Serway_PSE_test_ch23

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some of the field lines leaving the positively
charged pith ball end on the neutral pith ball
all field lines leaving the positively charged
pith ball end on the neutral pith ball
none of the field lines leaving the positively
charged pith ball end on the neutral pith ball
positive charge is transferred along the field
lines until both balls have equal charges
positive charge is transferred along the field
lines until both balls hang along vertical lines
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Which one of the diagrams below is not a
possible electric field configuration for a region
of space which does not contain any charges?
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A negatively charged particle is moving in the +y-direction when it enters a region
with a uniform electric field pointing in the +x-direction. Which of the diagrams below
shows its path while it is in the region where the electric field exists? The region with
the field is the region between the plates bounding each figure. The field lines
always point to the right. The x-direction is to the right; the y-direction is up.
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1. force, distance and
electric charge
2. force
3. distance
4. force and distance
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distance
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Rubber rods charged by rubbing with cat fur repel each other.
Glass rods charged by rubbing with silk repel each other. A rubber
rod and a glass rod charged respectively as above attract each
other. What is a possible explanation?
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A rubber rod and a glass rod charged
this way have opposite charges on
them.
Any two rubber rods charged this way
have opposite charges on them.
Any two glass rods charged this way
have opposite charges on them.
All rubber rods always have an excess
of positive charge on them.
All glass rods always have an excess
of negative charge on them.
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A uniformly charged rod (length = 2.1 m, charge per
unit length = 2.3 nC/m) is bent to form a semicircle.
What is the magnitude of the electric field at the
center of the circle?
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A uniformly charged rod (length = 2.1 m, charge per
unit length = 4.8 nC/m) is bent to form one quadrant of
a circle. What is the magnitude of the electric field at
the center of the circle?
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Three pith balls supported by insulating threads hang from a
support. We know that ball X is positively charged. When ball X is
brought near balls Y and Z without touching them, it attracts Y and
repels Z. What can we conclude?
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Y is negatively charged or
neutral (has no net
charge.)
Y has a negative charge.
Z has a negative charge.
Y has a positive charge.
Z is neutral (has no net
charge.)
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1. less than
2. the same as
3. more than
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Three objects are brought close to each other, two at a
time. When objects A and B are brought together, they
attract. When objects B and C are brought together,
they repel. From this, we conclude that _____.
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objects A and C possess
charges of the same sign
objects A and C possess
charges of opposite sign
all three of the objects possess
charges of the same sign
one of the objects is neutral
we need to perform additional
experiments to determine
information about the charges
on the objects
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47
48
49
50
3
16
417
18
5
19
36
37
38
39
6
20
40
17% 17% 17% 17% 17% 17%
1.
2.
3.
4.
5.
6.
A>B>C
A>C>B
B>A>C
B>C >A
C >A>B
C >B >A
1
2
3
4
5
6
7
8
9
10
11
12
113
14
2
15
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
41
42
43
44
45
46
47
48
49
50
3
16
417
18
5
19
36
37
38
39
6
20
40