The intensity of the electric field measured on any given day at points close to the earth is 100 N / C and its direction is radially inward. When this value is the same for every point of the world, (a) Find the total load on Earth.
(b) Find the surface charge density.

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. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative