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An infinite number of charges, each of charge 1 μC, are placed on the x-axis with co-ordinates x = 1, 2, 4, 8, ....∞. If a charge of 1 C is kept at the origin, then what is the net force acting on 1 C charge 

(1) 9000 N

(2) 12000 N

(3) 24000 N

(4) 36000 N