A point charge of `0.009 mu C` is placed at origin.
Calculate intensity of electric field due to this point charge at point `(sqrt(2), sqrt(7), 0)`.

Explanation

`vec(E)=(qvec(r))/(4pi in_(0)r^(3))`, where `vec(r)=xhat(i)+yhat(j)=sqrt(2)hat(i)+sqrt(7)hat(j), vec(E)=(9xx10^(5)xx9xx10^(-9)(sqrt(2)hat(i)+sqrt(7)hat(j)))/((3)^(3))=(3sqrt(2)hat(i)+3sqrt(7)hat(j))NC^(-1)`