1.
Two point charges 3μC3\,\mu\text{C} and 2.5μC2.5\,\mu\text{C} are placed at point A(1,1,2)mA\,(1, 1, 2)\,\text{m} and B(0,3,1)mB\,(0, 3, -1)\,\text{m} respectively. Find the electric field intensity vector at point C(3,3,3)mC\,(3, 3, 3)\,\text{m}.