Electric field
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3. Suppose two charges, equal in size but opposite in sign, are arranged as shown. Draw arrows representing the direction of the electric field at points A, B, and C. At which of these points is the magnitude of the electric field the largest?
4. Four charges of equal magnitude are placed at the corners of a square, as shown in two different diagrams below. For each diagram, find the direction of the electric field at point A, which is halfway between two of the charges. Show the direction with an arrow. (One arrow only: there can be only one field direction!)
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3. Point B has the largest field since it is the closest to the charge.
4. The x-component of the net field from the left upper and ...
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