A charge particle q1 is at position (2,-1,3).The electrostatic force on another charged particles q2 at
(0, 0, 0) is:Position vector, →d
→d=(2−0)^i−(1−0)^j+(3−0)^k=2^i−^j+3^k
d3=[(2^i−^j+3^k).(2^i−^j+3^k)]32
d3=14√14
Electrostatic force F
F=14πεoq1q2d3→d=q1q24πεo(2^i−^j+3^k)14√14
F=q1q256√14 πεo(2^i−^j+3^k)