If a negative point charge is placed at PP without moving the original charges, the net electrical force the charges ±Q±Q will exert on it is

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point p is equidistant from two point charges +-Q of equal magnitude if a negative point charge is places at P without moving the original charges the net electrical force the charges +-Q will exert on it is A. directly upward B. directly downward C. zero D. directly to the right E. directly to the left why is it A?????

Answer : Directly upward

Explanation:

The direction of the resultant force acting on the charge placed at P will be in the upward direction. this is because the net electric force  at point p due to the opposite charges will be acted in the downward direction. If the negative charge is placed at point P, then the direction of the resultant force acting on the charge placed at P will be in the opposite direction to that of the field. i.e in the upward direction

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