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Class 12 Physics (Part I) Chapter 2 Electrostatic Potential And Capacitance Quiz 1 (25 MCQs)

Quiz Instructions

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1. The work done is stored as ..... in the capacitor.
2. The ohmmeter reading for a short circuited capacitor is
3. The capacitance of a parallel-plate capacitor without a dielectric is 0 2FC=$\mu$. If a dielectric with a dielectric constant 3K= is inserted between the plates, calculate the new capacitance of the capacitor.
4. Two capacitors with C$_{A}$ greater than C$_{B}$ and are connected in series with a battery. Which of the following is true?
5. A capacitor has an initial energy stored as U 0. After the dielectric is inserted, the capacitance increases. How does the energy stored in the capacitor change if the potential difference is kept constant?
6. If dielectric is inserted, When the battery is connected the electric filed is
7. The relation between electric field and electric potential is
8. The property of a capacitor to store electricity is called its
9. A charge Q is divided into two parts of q and Q-q. If the coulomb repulsion between them when they are separated is to be maximum, the ratio of Q/q should be-
10. A student generates an equipotential map of a point charge and notices the electric potential decreases the further away from the charge. From only this information the student can determine which of the following?
11. What is the SI unit of resistance?
12. What is the work done per unit charge in bringing a small positive test charge from infinity to a point in an electric field?
13. What is the ability of a system to store an electric charge measured in?
14. Electric potential due to a point charge-q at distance x from it is given by:
15. ..... are the dielectric materials
16. Which of the following capacitors will have least energy stored in it?
17. SI unit of capacitance is
18. If two negative charges are held close together and then released, the charges will
19. How particles are arranged affects ..... energy.
20. What is the measure of a material's ability to reduce the electric field within it?
21. SI unit of permittivity of free space is-
22. What is the SI unit of electric charge?
23. Two charges of equal magnitudes kept at a distance r exert a force F on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is-
24. A positive charge $+Q$ $d$ $-Q$
25. The capacitance of 1 $\mu$F equals
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