Point p and point charge q are separated by a distance r. the electric field at point p has magnitude e. how could the magnitude of the electric field at point p be doubled to 2e? ,

We know , E = kQ/r^2 where q = charge and r is separation between point and point charge. Now, At P, E= kQ/r^2 Since, Q can't be changed, we can do that by varying r 2E = 2kq/r^2 2E = kq/ (r/ sqrt2)^2 Hence, if we bring Q closer such that distance between P and Q becomes r/ sqrt 2, E will get doubled.

FRONT is right... Just took the test :)