- #1
Eitan Levy
- 259
- 11
- Homework Statement
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- Relevant Equations
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This is not a homework question but something that bugs me a bit.
My professor has stated that the electric field inside a conductor is 0. This I understand.
However, he has also said that even if the conductor has some hole in it, the electric field inside this hole is also 0
Now, two examples which confuse me:
Consider a thick spherical shell with radiuses a,b. Now, let there be a point charge q outside the shell. It is said the the electric field inside the shell is 0 due to the reason above.
However, if we move the charge to the center of the shell, it is said that the electric field inside the shell is kq/r^2, which is different than 0.
I am quite confused. Is the statement only correct when there are no charges inside the hole?
Another quick question: If the shell isn't thick, is the electric field inside still 0 for the first example? I believe it is but am not sure.
My professor has stated that the electric field inside a conductor is 0. This I understand.
However, he has also said that even if the conductor has some hole in it, the electric field inside this hole is also 0
Now, two examples which confuse me:
Consider a thick spherical shell with radiuses a,b. Now, let there be a point charge q outside the shell. It is said the the electric field inside the shell is 0 due to the reason above.
However, if we move the charge to the center of the shell, it is said that the electric field inside the shell is kq/r^2, which is different than 0.
I am quite confused. Is the statement only correct when there are no charges inside the hole?
Another quick question: If the shell isn't thick, is the electric field inside still 0 for the first example? I believe it is but am not sure.