Print ViewCalculating Flux for Hemispheres of Different Radii

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Calculating Flux for Hemispheres of Different Radii

Homework Statement


Calculating Flux for Hemispheres of Different Radii.
There are two hemispheres and I have to find the flux through the annular ring of surface 1, 2, and 3 in terms of C (a constant proportional to a charge) and two radii r_1 and r_2.
Here is a diagram of this http://img233.imageshack.us/img233/5523/hemsp1tw8.gif [Broken]

Homework Equations


flux = |E||dA|cos(theta)
E(r)=C/r^2 r_hat
These are the equations that are given in the problem.

The Attempt at a Solution


I really have know idea where to go with this problem. I know it just has to be the equation, but I don't know how to set it. If anyone has any strategies to solving this problem that would be great.
Thanks.
 
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Answers and Replies

  • #2
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I am probably too late but


You have E = C/r^2
You have flux = E*A

Once you find your area, you can cancel the radius out
 

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