Final Exam
13303
- Spring 2004 / Dr. Abramzon
Name
Instructions:
•
Closed book – you may use ONE 8”x11” sheet with formulas
•
Read each problem carefully.
•
There are 7 problems, worth a total of 50 points. There is one bonus
problem worth an additional 5 points.
•
It is critical that you show all of your work - don't just write down answers
•
Please turn in your formula sheet at the end of the exam
Good luck!
Problem 1
( 5 points)___________
Problem 2
( 7 points) ___________
Problem 3 ( 8 points)
___________
Problem 4 ( 9 points) ___________
Problem 5 ( 6
points) ___________
Problem 6 ( 8 points) ___________
Problem 7 ( 7 points) ___________
Bonus Problem ( 5 points)
___________
Total :

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1) A copper rod 0.150m long with mass of 0.05kg is suspended
from 2 thin flexible wires. At right angles to the rod is a uniform
magnetic field of 0.550T pointing into the page.
a) (3 points.) Find the magnitude of the electric current needed to
levitate the cooper rod.
b) ( 2 points) Find the direction of the electric current needed to levitate the
cooper rod.