Which one of the following statements concerning electrostatic situations is fal

Question

Which one of the following statements concerning electrostatic situations is false?

(a) E is zero everywhere inside a conductor

(b) Equipotential surfaces are always perpendicular to E

(c) It takes zero work to move a charge along an equipotential surface

(d) If a negatively charged rod is attracted to a conducting sphere, then that sphere must have a net positive charge

(e) If the E is zero in a region of space, then the potential is constant in that region

Please select the correct "false" answer and give a quick explanation. Many thanks!

Explanation / Answer

(d) If a negatively charged rod is attracted to a conducting sphere, then that sphere must have a net positive charge

since the negative charged rod can cause polarization of charge in a neutral sphere and can attaract it too

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