Another Net charge question

  • Thread starter qz27
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  • #1
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Main Question or Discussion Point

If the field is zero at all points on a surface, does this mean there is no net charge enclosed by the surface?

I thought if you had an insulator of some kind wrapping around the charged particle, it could have those properties. but i also feel that electric field will go through insulator..( like a magnet thats still magnetic even if its covered by a layer of wood)..

any help would be appreciated
 

Answers and Replies

  • #2
Doc Al
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If the field is zero at all points on a surface, does this mean there is no net charge enclosed by the surface?
Yes.

I thought if you had an insulator of some kind wrapping around the charged particle, it could have those properties.
I don't understand what you're saying here.
 
  • #3
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well, if theres a charged sphere, like a mouse ball, but the outside of it is wrapped in rubber, which will insulate it, would there be an electric field on the surface of the rubber?
 
  • #4
Doc Al
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Sure, why not?
 
  • #5
jtbell
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qz27 said:
but the outside of it is wrapped in rubber, which will insulate it
Insulators block electric current, not the electric field.
 
  • #6
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thanks DOC Al and jtbell!
thats exactly what i needed to know but wasnt sure about!
 

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