4 point charges each the samemagnetude with varying signs are arranged at the corners of asquare. Which of the arrows labeled A, B, C, D, gives the correctdirection of the net force that acts on the charge at the upperright corner?
A, B, C, D, the net force on the charge is 0
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A point charge of -0.70μC is fixed to one corner of asquare. Anidentical charge is fixed to the diagonallyopposite corner. A pointcharge q is fixed to each of theremaining corners. The net forceacting on either of thecharges q is zero. Find the magnitude andalgebraic sign ofq.answer: +2.0μC
(a) Two equal positive charges are to be placed on two corners of asquare so that the electric potential at the other two corners isequal. Check all the configurations of the charges that will havethis result. (b) A positive charge and a negative charge of equalmagnitude are to be placed on two corners of a square so that theelectric potential at the other two corners is equal. Check all theconfigurations of the charges that will have this result.(a)Opposite cornersAdjacent corners(b)Opposite cornersAdjacent corners
The figure shows four electrical charges located at the corners of a rectangle. Like charges, you will recall, repel each other while opposite charges attract. Charge B exerts a repulsive force (directly away from B) on charge A of 3.3 N. Charge C exerts an attractive force (directly toward C) on charge A of 6.6 N. Finally, charge D exerts an attractive force of 2.2 N on charge A. Assuming that forces are vectors, what is the magnitude of the net force \vec{F}_{\rm net} exerted on charge A?
