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Electricity and Magnetism
Physics 2217 and AEP 2170
Spring 2011
Homework 3
Assigned: Saturday February 5
th
Due: Friday February 11
th
1.
Problem 2.1 Purcell
2.
Problem 2.8 Purcell
3.
Problem 2.13, 2.14, 2.15 Purcell. Note 2.132.15 are very short math problems,
you should be able to do these rather quickly and without opening a book (if not,
work with your TA’s during their office hours for extra math help).
4.
Problem 2.29 Purcell
Note, don’t be mislead by what I might have alluded to in class. Treat each sphere
separately, then add, i.e., use superposition. These are NONconducting spheres.
5.
Find the potential of a uniformly charged spherical shell of radius R. In class I did
this by first calculating the electric field, then calculating a line integral. I would
like you to start with the charge density and NOT use the electric field at all.
Also, sketch the potential and the gradient of the potential as a function of
distance, take careful note what happens at surface of the sphere (this will help
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This note was uploaded on 06/10/2011 for the course PHYS 2217 taught by Professor Leclair, a during the Spring '06 term at Cornell University (Engineering School).
 Spring '06
 LECLAIR, A
 Magnetism, Work

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