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Class 12 Physics (Part I) Chapter 1 Electric Charges And Fields Quiz 3 (25 MCQs)

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1. Which is a characteristic of most electrical conductors?
2. The distance between the two charges 25 $\mu$
3. When a glass rod is rubbed with silk, it(a) gains electrons from silk.(b) gives electrons to silk.(c) gains protons from silk.(d) gives protons to silk.
4. An electron and a proton are in a uniform electric field, the ratio of their accelerations will be
5. Potential at any point inside a charged hollow sphere in a physics lab:
6. An electric dipole is placed in a uniform field. The resultant force acting on it .....
7. The electrical force between charges is strongest when the charges are
8. On charging a neutral Balloon its size-
9. The electric potential at a distance of 4 m from a certain point charge is 200 V relative to infinity. What is the potential (relative to infinity) at a distance of 2 m from the same charge?
10. The dimensional formula of electric charge is
11. The repulsive force between two particles of same mass and charge separated by a certain distance is equal to the weight of one of them. The distance between them is ..... m. Mass of the particle = 1.66 x 10$^{-27}$ kg, charge of the particle = 1.6 x 10$^{-19}$ C, k = 9 x 10$^{9}$ MKS, g = 10 m/s$^{2}$.
12. Two point charges, initially 2 cm apart, are moved to a distance of 10 cm apart. By what factor does the resulting electric force between them change?
13. Which has a charge with the greatest magnitude?
14. The value of electric field inside a conducting sphere having radius R and charge Q will be:
15. What do we call electricity that builds up on an object?
16. If q is the charge per unit area on the surface of a conductor, then the electric field intensity at a point on the surface is
17. A charged particle is placed in a uniform electric field. What is the direction of the force acting on the particle if it is positively charged?
18. Which of the following statements is not true about Gauss's law?
19. Where can an electric field be found?
20. Coulomb's law also says if distance increases, then force
21. Uncharged particle found in the nucleus is .....
22. The unit of electric field is not equivalent to
23. The quantisation of charge indicates that
24. Electrostatics is the study of
25. Particles with like charges .....
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