(7) The figure shows two arcs of a circle of radius R on which charges +Q and -Q have been spread uniformly. (a) What is the electric field at the center of the circle due to these two arcs? (b) If both arcs were positive, how would that change your answer to (a)? 2

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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.