The dimension of an atom is of the order...

The dimension of an atom is of the order of an angstrom. Thus there must be large electric field between the protons and electrons. Why is then the electrostatic field inside a conductor is zero ?

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Electric fields are caused by excess electric charge. There can be no excess charge inside an isolated conductor. Therefore, the electrostatic field inside a conductor is zero.

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The dimension of an atom is of the order of an angstrom. Thus there must be large electric field between the protons and electrons. Why is then the electrostatic field inside a conductor is zero ?

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