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Class 12 Physics (Part I) Chapter 1 Electric Charges And Fields Quiz 5 (25 MCQs)

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1. Electric field lines contract lengthwise, It shows:
2. Two charges of equal magnitude kept at a distance r, exert a force F on each other. If the charges are halved and the distance between them doubled, then what is the force acting on each charge?
3. If a student enters a room with a uniformly distributed air freshener, the scent intensity:
4. Unit of Electric field is
5. A pith ball has an electric charge +q, and it feels a force F when placed a distance d from a second pith ball with an electric charge +q. When the second pith ball is moved to a distance 2d, the force on the pith ball is .....
6. Electrical force between two point charges is 200 N. If we increase 10 % charge on one of the charges and decrease 10 % charge on the other, then electrical force between them for the same distance becomes .....
7. Two unequal charges exert ..... magnitude of force on each other.
8. What is the electric field inside a charged conductor?
9. Which physical quantity have unit Newton/coulomb
10. Five students named Kiara, Shreya, Naira, Aarav, and Arjun are participating in a science experiment. Pairs (Kiara, Shreya), (Shreya, Aarav), and (Aarav, Kiara) show strong friendship, while pairs (Shreya, Naira) and (Aarav, Arjun) have conflicts. Therefore, Kiara must be:
11. An electrostatic force of magnitude F exists between two metal spheres having identical charge q. The distance between their centers is r. Which combination of changes would produce no change in the electrostatic force between the spheres?
12. Which Quantity is vector Quantity among the following-
13. Charge on a body is integral multiple of $\pm e$
14. Raju rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?
15. What happens to the mass of a body when it is positively charged?
16. Two protons are released from rest, with only the electrostatic force acting. Which of the following statements is NOT true about them as they move apart?
17. An electric dipole is placed in an electric field of a point charge, then .....
18. Potential at any point inside a charged hollow sphere:
19. A circular disc of radius R is placed in a magnetic field of strength B. What is the net magnetic flux linked with the disc?
20. As the value of r increases, what happens to the value of F?
21. Electric intensity, at any point, in the equatorial plane of a di-pole is:
22. Electric charges that are alike ..... each other.
23. The space around an electric charge that causes them to attract and repel is called
24. Two charges are placed 1 meter apart. If the distance between them is doubled, what happens to the force between them?
25. Electric intensity, at any point, distant 'r' from a plane charged conducting sheet varies as:
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