Four charges q1=1μC, q2=2μC, q3=3μC and q4=4μC are placed at (0,0,0), (1m,0,0), (0,1m,0), (0,0,1m) respectively. Let →Fi be the net force acting on ith charge of the given charges then ∑Fi=....
A. 0.018
B. 0.02N
C. 0.036N
D. zero