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An infinite number of charge, each q coulomb, are placed along x-axis at x = 1m, 3m, 9m. Calculate the electric field at the point x = 0 due to these charges if consecutive charges have opposite signs.

1 Answer

$\large\frac{1}{4 \pi \in_0} \frac{9q}{10}$$NC^{-1}$
Hence C is the correct answer.
answered May 30, 2014 by meena.p

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