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Class 12 Physics (Part I) Chapter 1 Electric Charges And Fields Quiz 8 (25 MCQs)

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1. Electric intensity, at any point, in between the two oppositely charged walls of a classroom depends:
2. Electric intensity, at any point, on the axial line of an electric di-pole in a physics lab is:
3. Electric flux is a .....
4. A charge 'q' is to be divided between two objects A and B. The charges on A and B such that the force between A and B can be maximum is .....
5. Electricity is made up of:
6. Electric charges that are different ..... each other.
7. Charge given to a spherical conductor is uniformly distributed in its entire volume.
8. Two point charges of +3 $\mu$C and-5 $\mu$C are placed 8 cm apart. Calculate the force between them.
9. When an object gains electrons it becomes .....
10. Two students Aditi and Ishaan are sitting at the ends of a straight line. Another student Anika is placed at the midpoint of the line. Then the student Anika placed at the midpoint will:
11. Electric field due to uniformly charged infinite plane sheet is independent of the distance r of the point from the charged plane sheet. True or false
12. As two oppositely charged particles approach each other, what happens to the electrical force between them?
13. A student named Kabir is studying the interaction between charges. He observes that a charge q1 exerts some force on a second charge q2. A third charge q3 is brought near. Then, the force exerted by q1 and q2 will:
14. What is the SI unit of charge?
15. There exists an electric field of 100 N/C along Z-direction. The electric flux passing through a square of 10 cm sides placed on XY plane inside the electric field is .....
16. Electric field, at any point, distant r (>R) from the centre of a spherically symmetric charge distribution of radius R varies:
17. Two charges are placed 1 meter apart. If the distance between them is doubled, what happens to the force between them according to Coulomb's Law?
18. What is the principle of superposition related to in the context of electric charges?
19. Electric flux linked with a given plane surface is maximum if the angle between the electric lines of force and the normal to the surface is:
20. What variable is a Coulomb the unit for?
21. Two charges of equal magnitudes and 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
22. A conducting sphere of radius 10 cm has an unknown charge. If the electric field 20 cm from the centre of the sphere is 1.8 x 10$^{3}$ N/C and points radially inward, what is the net charge on the sphere?
23. Which quantity and unit are correctly paired?
24. Charge on a body is integral multiple of $\pm$
25. A charged particle of mass 0.003 g is held stationary in space by placing it in a downward direction of electric field of 6 x 10$^{4}$ N/C. Then, the magnitude of charge is .....
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