Physics – Class 12 Practice Test 2

1. An electric field \(3\hat{j} + 4\hat{k}\) N/C is present at a place. What will be the electric flux passing through a square plate if the plate is placed in the y-z plane?

2. What is the correct diagram regarding the variation of an electric field with distance from an electric dipole if the distance is very large than the dipole length?

3. The electric potential difference between two points is a path function. The statement is __________

4. If V_A and VV_B are the potentials of the two points A and B, what will be the correct relation between the electric field and the potential difference between the points? The distance between the points is d.

5. What is the dimension of the dipole moment?

6. Three charges –q, Q and –q are placed in a straight line maintaining equal distance from each other. What should be the ratio \(\frac {q}{Q}\) so that the net electric potential of the system is zero?

7. The work done to move a charge of 20C by a distance of 2cm is 2J. What is the potential difference between those two points?

8. A charge q is at the center of the circle ABCDE. Which among the following is true if the charge is taken from A to B, C, D, and E?

9. 1 V/m= _______

10. Two cylindrical pipes having radius 2m and 5m are placed coaxially. The inner cylinder has total charge 1C and the outer sphere has total charge 2C. What will be the nature of electric field intensities at different distances from the axis of the cylinders?