Gauss' Law: Charge distribution on concentric spherical surfaces

  • Thread starter Arman777
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  • #26
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You are right.
There was some confusion about the sign of charges. The problem text said that "The sphere has a total charge of 2Q and the shell has a total charge of 3Q."
The charge locates on the surfaces. So there is 2Q charge on the surface of the inner sphere of radius a. By induction, there is -2Q charge on the inner surface of the shell, a sphere of radius b, and to make the total charge of the shell 3Q, there must be 5Q charge on the outer surface of radius c.

Makes sense
 
  • #27
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Electrons cannot pass air.

This was true

I am confused after your posts.I asked my prof and the answer was like this,

İnide sphere theres 2Q
Outer speher inner surface -2Q
Outer sphere outhere surface 5Q
 
  • #28
BvU
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Ys, we thought you had understood after post # 23, but apparently that was premature. Did prof make it clear to you or do we need to explain some more ?
 
  • #29
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I understood thanks
Ys, we thought you had understood after post # 23, but apparently that was premature. Did prof make it clear to you or do we need to explain some more ?
 

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