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Class 12 Physics (Part I) Chapter 2 Electrostatic Potential And Capacitance Quiz 2 (25 MCQs)

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1. What is the electrostatic potential at equatorial point of a dipole?
2. Two charges +q and-3q are placed at a distance of 1m apart. The points on the line joining two charges, where electric potential is zero, is:
3. ..... is that property of a capacitor which delays any change of voltage across it
4. Three capacitors each of the capacity C are given. The resultant capacity 2/3 C can be obtained by using them
5. Inserting a dielectric material between two charged parallel conducting plates, originally separated by air and disconnected from a battery, will produce what effect on the capacitor?
6. What is the unit of capacitance?
7. ..... field is associated with the capacitor
8. A charge moves between two equipotential surfaces of 24 V to 15 V. If these surfaces are 2 cm apart, what is the magnitude of the average electric field in-between these surfaces?
9. What is the unit of magnetic flux density?
10. The direction of electric field lines shows the
11. Which of the following capacitors will have the least value of breakdown voltage?
12. A positive charge $Q$ $E$ $d$
13. Electrical potential energy is the energy a charged object has because of its
14. The capacitance between two plates increases with
15. What is the property of a material that determines how much electric field it can withstand before breaking down?
16. If you walk into a region of space and suddenly feel a force, the space is said to contain a
17. As a proton moves in the direction the electric field lines .....
18. These form a surface where the electric potential is constant everywhere on the surface.
19. A small, positively charged object near a positively charged sphere is moved closer to the sphere. The electrical potential energy of the small object
20. Suppose you touch a negatively charged object to a metal sphere so that electrons move from the charged object onto the sphere. After the charged object is moved far away, electrons on the sphere will be
21. If three resistors connected in parallel connection, then effective resistance is ..... $\mu$F, C$_{1}$=5$\mu$F, C$_{2}$=10$\mu$F, C$_{3}$=15$\mu$F
22. The SI unit of electric flux is-
23. The difference in electrical potential energy between two places is called .....
24. The magnitude of electric potential is ..... at an infinite distance.
25. A charge Q is placed at the centre of the line joining two point charges +q and +q. The ratio of charges Q and q is-
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