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An infinite number of charges each equal to q are placed along the x axis at $x = 1, x = 4, x = 8 ……..$ and so on. Choose the correct option/s.(A) the potential at the point x = 0 due to the set of charges given is $ \large\frac{2q}{4 \pi \in_0}$ (B) the potential at the point x = 0 due to the set of charges given is $\large\frac{q}{4 \pi \in_0}$. (C) the potential if in the above set up the consecutive charge have opposite sign is $ \large\frac{1}{4 \pi \in_0 } \bigg( \large\frac{2q}{3}\bigg)$ . (D) the potential if in the above set up the consecutive charge have opposite sign is $\large\frac{1}{4\pi \in_0 } \bigg(\large\frac{q}{3} \bigg)$

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The options A and C are correct.
answered Jun 9, 2014 by meena.p
 
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