In a rectangular coordinate system, point charges of 2muC,
4muC, 5muC and -4muC are placed at the points p1(3,4) meters, P2
(0,4) meters, P3(1,3) meters and p4(5,2) meters,respectively.
Calculate the amount of work required to transfer a charge of 15muC
from the origin to the point (6,2) meters