Question 1:

y (m) B 2 A -3 -2 -1 1 2 x (m) Two point charges, A = -2 Q and B = 2 Q are located at the positions shown in the figure above. a) What is the force on a charge +q at the origin? kQq N b) Where would you place a point charge +4 Q such that the net force on q is zero? (s, y) =X -2Q +Q - - - - - - -- - -- 3 cm - - - - - - -3Q 4 cmn +2Q Four point charges are located at the corners of a rectangle as shown in the figure above. Take Q = 8nC. Find the resultant force on the following, taking into account the units: a) -2Q b) -3Q: i+