We will publish here the portions one cannot afford to miss while preparing for the CBSE class 12 Physics Examination
The Chapters will be posted below. On Clicking the name of the chapter a new page will open. On that page there will be a set of collected questions. On clicking the questions, the complete solution to the questions will open.
Please note that this system is under preparation. We hope to complete this within a month. The link will be activated only after completing the project.
Two point charges 4 μC and 2 μC are separated by a distance 1 m in air. At what point on the line joining the two charges is the electric field intensity zero?
Derive an expression for the work done in rotating a dipole through an angle θ in a uniform electric field.
3 Marks Questions
Show that, in a uniform electric field, a dipole experiences only a torque, but no net force. Derive an expression for the torque experienced by a dipole in a uniform electric field.
Write three points of difference between mass and charge.
An electric dipole of length 2 cm is placed with its axis making an angle 60 degrees with respect to a uniform electric field of 105 N/C. If it experiences a torque of 8 √3 Nm, calculate the
(i) magnitude of charge on the dipole, and
(ii) potential energy of the dipole.
5 marks Questions
Using Gauss’ theorem, derive an expression for the electric field intensity at a point due to a uniformly charged spherical conducting shell when the point is
(a) outside the sphere
(b) on the sphere
(c) inside the sphere