Gauss's law and electric flux

  • Thread starter jincy34
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  • #1
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Homework Statement



What is the net electric flux through the the torus if a=-6 nC and b=60 nC ?


Homework Equations



Electric flux=Qin/E

The Attempt at a Solution



I solved with Qin being 6*10^-9 C as it is the charge inside and E0=8.85*10^-12. I got 678 for electric flux. But it is wrong.
 

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Answers and Replies

  • #2
G01
Homework Helper
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[tex]\epsilon_0 = 8.85*10^{-12}[/tex] not [tex]8.85*10^{-9}[/tex].

This may be your problem. If it is not, show your work and we may be able to give you more in depth help.
 
  • #3
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I put the right value for E0. But, I am not sure if the charge I am using is right or not. Is the charge inside 60nC, 6nC or net charge?
 
Last edited:
  • #4
G01
Homework Helper
Gold Member
2,665
16
I put the right value for E0. But, I am not sure if the charge I am using is right or not. Is the charge inside 60nC, 6nC or net charge?

Is the +60nC charge contained inside the surface of the solenoid?
 

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