Question

Rank the six combinations of electric charges on the basis of the electric force acting on q1. Define forces pointing to the right as positive and forces pointing to the left as negative. Rank positive forces as larger than negative forces.  

Rank from largest to smallest, placing the largest on the left and the smallest on the right. To rank items as equivalent, overlap them.  

There are two types of charge, which have opposite signs. Which type we call "positive" is an arbitrary convention. Therefore, if all of the charges in a combination changed sign, the magnitude and direction of the electric force would not change. Look for pairs of combinations where all of the charges in one have the opposite signs of the charges in the second. To show this equality, stack the cards for the equivalent charge combinations one on top of another.

Answer 1

Answer 2

The electrostatic force between two charges is, Here, r is the di stance between the two charges and k is Coulomb constant G142 The net force on the charge a is the sum of the forces due to charges q2 and g3 If the two charges are opposite, the force is attractive and if they are of same type the force is repulsive. If the combinati on has same type of charges (+1,+1,+1 or -1-1,-1) the force is very small due to all charges have The order of the forces is, Largest qi-1 nC, q2 -1 nC and Second largernt s nIncn+1C Third largestisg-+1 nC, +1 nC,g1 nC Smallest are ,+nC,2 nC,3 nC andg1 nC,21nC, nC