Why is the Electric Field Zero Inside a Spherical Conductor?

Photo: Rhett Allain

With the introduction of the electric field in introductory physics courses, the first thing is a calculation of the electric field due to a point charge. But who has actually seen a point charge? I mean, sure — an electron would be a point charge, but you can’t really see it.

Most textbooks go on to introduce macroscopic objects like a solid metal (conducting)…

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