A thin, metallic, spherical shell of radius a = 7.0 cm has a charge qa = 9.00×10^-6 C. Concentric with it is another thin, metallic, spherical shell of radius b = 16.80 cm and charge qb = 4.00×10^-6 C. Find the electric field at radial points r where r = 0.0 cm. Find the electric field at radial points r where r=25.2 cm. What is the charge on the outer surface of the outer shell?

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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.