1.

An infinite number of charges, each of charge 1 mC, 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          [DCE 2004]

A. 9000 N  
B.          12000 N
C.          24000 N
D.          36000 N
Answer» C.          24000 N


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