PH2200 EXAM I
SPRING 2008
INSTRUCTIONS
1.
Remove the Score Sheet from the exam booklet.
2.
Using a #2 pencil, in the lefthand column entitled Student Enrollment Sheet, fill in the following information:
I.D. Number
enter your Mnumber, but replace the letter M with the number 9
Name
enter your MTU email address without the @mtu.edu
Phone Number
leave blank
3.
With the exception of the first 28 answers on the Score Sheet, all remaining fields should be left blank.
4.
Be sure to fill in the circles completely and avoid stray marks on the form.
5.
This a ninety minute exam.
6.
Please cover your Score Sheet at all times.
7.
This is a closed book exam.
You may use the PH2200 Formula Sheet that is attached to this exam.
The next to last
sheet of paper is blank and may be used as scratch paper. You may find it convenient to rip the formula sheet and
scratch paper from the exam booklet.
8.
Graphing calculators are permitted, but equations may not be stored in calculators, nor may calculators be
exchanged.
9.
Cell phones should be turned off and may not be used during the exam period.
10. Assume all numerical data supplied with the problems have three significant figure accuracy, unless explicitly
identified otherwise.
11.
This exam consists of a total of 28 questions.
Each question has a single correct answer and is worth five points.
The total number of points available on the exam is 140.
12.
An announcement will be made when ten minutes remain.
Please remain seated after the announcement is made
until the Score Sheets are collected.
13.
If you have any questions during the exam, please raise your hand and wait for assistance.
14. Please turn in only your Score Sheet.
You may keep the exam booklet, formula sheet, and scratch paper.
Please Sit in Seat Number _____________________________
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PH2200 EXAM I
SPRING 2008
1.
A neutral conducting sphere is placed midway between two fixed unequal
point charges of
q
L
= +5
μ
C and
q
R
= +1
μ
C.
The sphere is free to move
and is insulated from the ground.
In which direction will the sphere
initially move when released from rest?
Ignore gravitational effects.
L
.......
5
μ
C
q
= +
i
R
........
1
μ
C
q
= +
i
(A)
to the left
(B)
to the right
(C)
The sphere will not move.
2.
Is it possible for a body to have an electric charge of
Is it possible for a body to have an electric
charge of
18
2.32
10
C?
−
+
×
19
3.20
10
C?
−
×
The following information applies to the next two questions.
Two identical, small, conducting spheres are fixed with their centers 0.300 m apart.
One is given a charge of
, and the other is given a charge of
.
9
12.0
10
C
−
+
×
9
18.0
10
C
−
−
×
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 Spring '09
 Gibbons
 Electrical Engineering, Electric charge, C D C E B

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