- #1
Aristotle
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Homework Statement
I was looking for some practice problems in my textbook and found this problem that I was just a little stuck on. I drew the diagram from my textbook with the givens of the problem.
Homework Equations
∲E*dA = Q (inside) / ɛ0
The Attempt at a Solution
For r less than/equal to a:
E(4pir^2) = 3Q/ɛ ---> E = 3Q / 4*pi*ɛ(r^2)
For a<r<b:
E= -5Q/ (4*pi*r^2)
Can somebody verify with me that I've done the first two above correctly?
Also the part that I got stuck on was the r is greater than/equal to c...
I see that if r was equal to c there would be no charge, hence e-field will be zero inside the conductor. However, when r is greater than c, then there would be a charge of -5Q. How would I usually deal with the case of "greater than/equal to"?
Thank you Physics community!
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