A solid, insulating sphere of radius a shown in figure has a total charge -2Q. Concentric with this sphere is a conducting hollow sphere with a total charge 3Q whose inner and outer radii are b and c, as shown in Figure. a) Using Gauss Law find the magnitude of electrical field in the region r>c. The Gaussian surfaces used should be shown on the figure. The steps followed while applying Gauss's law should be written in detail. b) Write the magnitude of the electric field in the region b

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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.