A very large conducting plate lying in the xy plane carries a charge per unit area of 3σ. A second such plate located at z = 3.00 cm and oriented parallel to the xy plane carries a charge per unit area of −6σ. Find the electric field for the following. (Take upward to be in the positive z-direction.) (a) z < 0 (b) 0 < z < 3.00 cm (c) z > 3.00 cm

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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.