22.11 Projection of an element of area dA of a sphere of radius R onto a concentric sphere of radius 2R. The projection multi- plies each linear dimension by 2, so the area element on the larger sphere is 4 dA. The same number of field lines and the same flux pass through both of these area elements. E

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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.