A solid spherical non-conductor of radius 14.5 cm has a uniform charge density of ρ = 3.70 µC/m3. (a) Find the magnitude of the electric field at a distance of 9.90 cm from the center of the sphere. N/C (b) Find the magnitude of the electric field at a distance of 19.0 cm from the center of the sphere. N/C (c) Now consider a solid spherical conductor of same radius with the same total charge as the non-conducting sphere in part (a). Find the electric field at the two distances indicated in parts (a) and (b). Er = 9.90 = N/C Er = 19.0 = N/C

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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.