ABC is an equilateral triangle of each side 5 cm . Two charges of $\;\pm\large\frac{50}{3}\times10^{-3}\;\mu C\;$ are placed at B and A respectively . Find the magnitude of resultant field at C .

Question

$(a)\;6\times10^{4}\;NC^{-1}\qquad(b)\;6\times10^{-4}\;NC^{-1}\qquad(c)\;6\times10^{0}\;NC^{-1}\qquad(d)\;None$