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PHY 142: Electricity & Magnetism (Honors)
Prof. S. Teitel stte@pas.rochester.edu  Fall 2009
Problem Set 9
Due Friday, November 20 by 2 pm in PHY 142 homework locker
 Problem 1 [10 points]
Purcell problem 6.18  Hint: use the potential drop given to determine the charge on the cylindrical surfaces. From this charge you can figure out the surface current when a cylinder is rotating.
 Problem 2 [10 points]
Purcell problem 7.4  The resistance of the loop should be large enough that the current is small enough that the emf due to the self inductance of the loop can be ignored.
 Problem 3 [10 points]
Purcell problem 7.17
 Problem 4 [10 points]
Purcell problem 7.21
 Problem 5 [10 points]
Purcell problem 7.22  The ring here is not a conductor, but rather a ring with a fixed charge per unit length around the circumference.

