As shown in the figure below, a solid insulating sphere of radius a - 5.00 cm carries a net positive charge Q = 3.00 µC that is uniformly distributed throughout its volume. Concentric with this sphere is a conducting spherical shell with inner radius b = 10.0 cm, outer radius c - 15.0 cm, and having net charge q = -1.00 µC. Determine the magnitude of the electric field (in N/C) at each of the following distances from the center of the spheres. Insulator Conductor (a) r= 4.50 cm N/C (b) r- 9.50 cm N/C (c) r= 12.0 cm N/C (d) r= 20.0 cm 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.