A solid conducting sphere of radius 2.00 cm has a charge of 8.75 µC. A conducting spherical shell of inner radius 4.00 cm and outer radius 5.00 cm is concentric with the solid sphere and has a charge of −2.75 µC. Find the electric field at the following radii from the center of this charge configuration. (a)    r = 1.00 cm magnitude     direction         (b)    r = 3.00 cm magnitude     N/C direction         (c)    r = 4.50 cm magnitude     N/C direction         (d)    r = 7.00 cm magnitude     N/C direction

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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.