
#1
Sep2011, 11:32 AM

P: 40

1. The problem statement, all variables and given/known data
A point charge of 20 nC is located at (4,1,3), and a uniform line charge of 25nC/m lies along the intersection of the planes x=4 and z=6. (a) Calculate D at (3,1,0). (b) How much electric flux leaves the surface of a sphere of radius 5, centered at the origin? (C) Repeat part b if the radius of the sphere is 10. 2. Relevant equations Q=total flux enclosed 3. The attempt at a solution I've already solved part a without a problem but its b and c that are giving me trouble. I seem to be having problems with Gauss's law. A sphere of radius 5 seems like it would enclose the 20nC point charge so wouldnt electric flux simply equal 20 nC. The answer seems to be 0 though. 



#2
Sep2011, 11:57 AM

P: 51

You didnt calculate the line charge enclosed by the sphere.....



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