A point charge with charge +Q is placed midway between a +10 nC point charge and a rod with a uniform charge distribution. What is the direction of the net force exerted on charge +Q? Clearly explain your reasoning. What will happen to the magnitude and direction of the net force on charge +Q if the length of the rod is reduced by one third without reducing the total charge? Clearly explain your reasoning.
Ī» = +10 nC/m
+Q
+10 nC