Exam
I
13301  Winter 2006 / Dr. Abramzon
Name
Instructions:
•
Closed book – you may use ONE 3”x5” card with formulas
only.
•
Read each problem carefully.
•
There are 3 problems, worth a total of 30 points. There is one bonus
problem worth an additional 3 points.
•
It is critical that you show all of your work  don't just write down your
answers
•
Please turn in your formula sheet at the end of the exam
Good luck!
Question 1 (10 points)___________
Question 2 (10 points) ___________
Question 3 (10 points) ___________
Bonus Question (2 points)
___________
Total:
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Question 1 (10 points)
a)
(5 points) The figure below shows two points (1 and 2) near a set of charged
particles. All particles carry charges of equal magnitude. In each case, is the
magnitude of the electric field at point 1,
larger than
,
equal to
, or
smaller than
that at point 2?
Explain
b) ( 5 points) The figure below shows the forces that three charged objects exert
on each other. Which of the four situations shown is/are not correct. Explain your
reasoning. (The size of the circle roughly corresponds to the amount of charge)
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 Spring '07
 n/a
 Physics, Electric charge, 2 L, 1.0M, Dr. Abramzon Name

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