Two metal spheres, each of radius 3.2 cm, have a center-to-center separation of 3.0 m. Sphere 1 has a charge of +1.4 × 10-8 C; sphere 2 has a charge of -3.1 × 10-8 C. Assume that the separation is large enough for us to assume that the charge on each sphere is uniformly distributed (the spheres do not affect each other). With V = 0 at infinity, calculate in volts (a) the potential at the point halfway between their centers and the potential on the surface of (b) sphere 1 and (c) sphere 2.

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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.