3. Find out the electric field required to hold a water drop of 103 kg mass. It is given that the charge on the drop is same as the charge of an electron. Ans. 6.13 x 1016 NC-1 (CBSE 1999) 4. Two charges 1 x 10 C are placed at two vertices of a triangle shown in Fig. 2.48. Find the electric field at the point P, 12 cm above the point C on perpendicular bisector of AB 121cm 13 cm 10-Ce C 10 mm. Fig. 2.48 -10-C B