An infinite number of charges, each of charge 1 μC are placed on the x-axis with co-ordinates x = 1, 2, 4, 8, ......... [infinity]. If a charge of 1 C is kept at the origin, then what is the net force acting on 1 C charge
a. 9000 N
b. 12000 N
c. 24000 N
d. 36000 N