A charge +q is fixed at each of the points x = x 0 , x = 3x 0 , x = 5x 0 , ...... upto infinity on the x-axis and a charge -q is fixed at each of the points x = 2x 0 , x = 4x 0 , x = 6x 0 , ..... upto infinity. Here x 0 is a positive 
constant. Take the electric potential at a point due to a charge Q at a distance r from it to be. Then the potential at the origin due to the above system of charges is:
A
0
B
C
∞
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Potential at origin will be given by
V = 
= 
. 
= 
In(2)
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