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 all the charges are of the same sign

1 Answer

$\large\frac{1}{4 \pi \in _0} \frac{9q}{8}$$NC^{-1}$
Hence B is the correct answer.
answered May 30, 2014 by