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Identical charges q = +5.00 μC are placed at opposite corners of a square that has sides of length 8.00 cm. Point A is at one of the empty corners, and point B is at the center of the square. A charge q0 = −3.00 μC is placed at point A and moves along the diagonal of the square to point B. (a) What is the magnitude of the net electric force on q0 when it is at point A? Sketch the placement of the charges and the direction of the net force, (b) What is the magnitude of the net electric force on q0 when it is at point B? (c) How much work does the electric force do on q0 during its motion from A to B? Is this work positive or negative? When it goes from A to B, does q0 move to higher potential or to lower potential?
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