+Q -a BA The figure above shows a solid insulating sphere of radius R2 with charge -Q (Q > 0) distributed uniformly throughout the volume. This sphere is centered within a thin spherical shell of radius R1; a charge +Q is distributed uniformly on the surface of the spherical shell. Very far away from the sphere and the spherical shell, the electric potential is zero. Use k for Coulomb's constant. At point A on the surface of the spherical shell, what is the electric potential VĄ? VA = Point B is on the surface of the sphere. What is the potential difference, VB – VA? VB – VA = Point C'is at the center of the sphere. What is the potential difference, Vc – VB? Ve - VB =

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.