Two point charges $\;q_{1}=3\times10^{-6}\;C\;$ and $\;q_{2}=5\times10^{-6}\;C\;$ are located at $\;(3 , 5 ,1)\;$ and $\;(1 , 3 , 2)\;m$ . Find the force on $\;q_{1}\;$ due to $\;q_{2}\;.$

Question

$(a)\;5\times10^{-3}\;(2 \hat{i}+2 \hat{j}-\hat{k})\qquad(b)\;5\times10^{-4}\;(2 \hat{i}+2 \hat{j}-\hat{k})\qquad(c)\;5\times10^{-3}\;(2 \hat{i}-2 \hat{j}+\hat{k})\qquad(d)\;5\times10^{-3}\;(2 \hat{i}+2 \hat{j}+\hat{k})$