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Class 12 Physics (Part I) Chapter 2 Electrostatic Potential And Capacitance Quiz 3 (25 MCQs)

Quiz Instructions

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1. What is the formula for calculating the total resistance in a series circuit?
2. Capacitors is used to ..... the efficiency of power transmission
3. Electric potential is defined as potential.
4. Total charge stored in the Capacitor is
5. What is the device that stores electric energy in an electric field?
6. The inverse of capacitance is called
7. When a capacitor undergoes a dielectric breakdown
8. In a capacitor the electric charge is stored in
9. If dielectric is inserted, When the battery is connected the capacitance is
10. Two similar spheres having +Q and-Q charges are kept at a certain distance. F force acts between the two. If at the middle of two spheres, another similar sphere having +Q charge is kept, then it experiences a force in magnitude and direction as-
11. The electric potential in a region of space is given by the function V=3x$^{2 }$+ 2y$^{3}$. what is the x-component of the electric field in this area?
12. Which law states that the total electric flux through a closed surface is equal to the charge enclosed by the surface?
13. A parallel-plate capacitor has an initial electric field 0 E between the plates. Now a dielectric is inserted between the plates. If the electric field with the dielectric is E, what is the relationship between 0 E and E? Assume the dielectric constant is 3K=.
14. What is the property of a material that opposes the flow of electric current?
15. Energy density in the capacitor is depends only on the
16. The potential difference across the parallel plate capacitor is 30 V, Now a dielectric is introduced between the plates, potential is reduced to 15 V. What is the value of dielectric constant?
17. Capacitor is a device used to store .....
18. What does Gauss's Law relate to?
19. The units of capacitance are
20. Every proton in the universe is surrounded by its own
21. What is the property of a material that determines how much magnetic field it can withstand before losing its magnetism?
22. Increasing the separation of the two charged parallel plates of a capacitor, which are disconnected from a battery, will produce what effect on the capacitor?
23. What is the phenomenon where a material becomes magnetized when exposed to a magnetic field?
24. ..... capacitors can be used only for Direct current applications.
25. Electric field lines provide information about-
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