Unit- I: Electrostatics (8 Marks) 2010 1. What will be the electric charge on the nucleus of the atom 8 O 16 ? 1 2. Obtain an expression for the equivalent capacitance of three capacitors of capacitances C 1 , C 2 and C 3 connected in series. 3 3. Define electric field intensity. Derive an expression for the electric field intensity at a point on the equatorial line of an electric dipole. 5 Or, Define electric potential at a point in an electric field. Derive an expression for the electric potential at a point due to an electric dipole. 5 4. An electric dipole place at the centre of a sphere. The electric f
