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Electric Field Example # 1
Two opposite but equal static point charges are separated by four centimeters and the electric field midway between these two charges is given to be 1,172 N/C. Knowing this information, we would like to determine the quantity of charge on each one of the electric charges. Since there are two electric charges, both charges will create an electric field at the midpoint. These two electric fields will point in the same direction, so we must add these two electric fields to calculate the net electric field. Since these electric charges are stationary and point charges, we can apply the electric field equation that we obtained from Coulomb's Law. We then solve for the quantity of charge using this equation, as shown in the lecture.
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