1.
Two point charges 3 μC3\,\mu\text{C} and 2.5 μC2.5\,\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}.