[help] finding the total electric flux

  • Thread starter bibo_dvd
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  • #1
bibo_dvd
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Hello Guys !

iam studing the electric flux and how the relationship between D ( electric flux density ) and E ( elecric field)


but i found this problem and i don't know which formula should i use to solve it to find the electric flux

i know that Q=(Psi)=the electric flux but i don't know how to use this to solve this problem

i tried to use the integration of the volume of the sphere which is r^2 sin(ceta)*dr*d(ceta)*d(phi)

but i didn't reach to the number in the solution ...I need your help !

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Answers and Replies

  • #2
rude man
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You don't integrate over volume, you integrate over surface area.
 
  • #3
bibo_dvd
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hmmm , this means that i will integrate r^2 sin(ceta) *d(ceta)*d(phi) ??
 
  • #4
rude man
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You don't actually perform any integration. You use Gauss's theorem thruout.
 

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