Conducting sphere Find the electric filed for r<a,a<r<b,r>b

  • #1

Homework Statement



media%2Fd9f%2Fd9f8c6e6-1a34-41bc-b603-9b7c319db8c5%2FphpsMDTM3.png

Homework Equations



main-qimg-0984e30591a0778448038088e6a03223-c-jpg.jpg

The Attempt at a Solution


for part ii)
a<r<b E=0
I am not sure what will be the difference between the formulas for the electric field for a<r and a>b I think the formulas will look the same:
upload_2018-8-19_15-48-53.png

The only difference that I can think of is that when r<a, we are going to use the charge enclosed in that surface. For r>b we are going to use the total charge. Is that true?
 

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Answers and Replies

  • #2
I'm confused on your use of variables, but looks like you got the right idea. You're correct, Qenc refers to total charge enclosed within the closed surface you're integrating over.
 
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