Electrostatics and Current Electricity Test Online MCQs

1. A positively charged rod is brought near an uncharged conductor. If the rod is then suddenly withdrawn the charge left on the conductor will be:

2. A charge of 5 C is placed at the center of a spherical Gaussian surface of radius 5 cm. The electric flux through the surface is:

3. Maximum value of current intensity due to a charged sphere is at:

4. Electric intensity is equal to:

5. The potential of a spherical conductor of radius 3 m is 6 V. The potential at its center is:

6. Electric lines of force about a +ve point charge are:

7. Where is the electric potential due to a charged shell constant?

8. Two charges are placed a certain distance apart. A metallic sheet is placed between them. What will happen to the force between the charges?

9. For an irregularly shaped charged conductor, the potential is:

10. A cubical Gaussian surfaces encloses 30 C of charge. The electric flux through each surface of the cube is:

11. Electric potential V due to a dipole is related to the distance r of the observation point as:

12. The work done in displacing a charge of 2 C through 0.5 m on an equipotential surface is:

13. Electric potential is:

14. A charge is moved against electric repulsion in an electric field. Which of the following is correct?

15. A positively charged glass rod is brought near the disc of uncharged gold leaf electroscope. The leaves diverge. Which one of the following statement is correct?

16. Two balls carrying charges + 8 µ C and – 5 µ C attract each other with a force F. If a charge – 3 µ C  is added to both, the force between the balls will be:

17. Conductivity of a conductor depends upon:

18. Work done in carrying 2 C charge in a circular path of radius 3 m around a charge of 10 C is:

19. Where does the electric potential due to a charge conducting shell vary inversely as the dis tanve from its centre?

20. What is the electric potential at a center of a charged shell of radius 0.1 m if the potential at its surface is 10 V?