Punjab 10th Class Physics Chapter 4 Electrostatics Mcqs Test Online

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Question 1 of 20

Physics

1. A positive electric charge:

1.Attract other positive charge

2.Repels a neutral charge

3.Repels other positive charge

4.Attracts a neutral charge

Question 1 of 20

Question 2 of 20

2. An object gains excess negative charge after being rubbed against another object, which is:

1.Either a, b or c

2.Neutral

3.Positively charged

4.Negatively charged

Question 2 of 20

Question 3 of 20

3. The distance between two point charges is 20 cm. If the distance is reduced to 10 cm, the coulomb force would become:

1.Two times

2.One fourth

3.Half

4.Four times

Question 3 of 20

Question 4 of 20

4. Five joules of work is needed to shift 10C of charge from one place to another. The potential difference between the places is:

1.2 V

2.10 V

3.5 V

4.0.5 V

Question 4 of 20

Question 5 of 20

5. A positive and a negative charge are initially 4 cm apart. When they are moved closer together so that they are now only 1cm apart, the force between them is:

1.4 times smaller than before

2.8 times larger than before

3.16 time larger than before

4.4 times larger than before

Question 5 of 20

Question 6 of 20

6. Which is not conductor?

1.Aluminium

2.Copper

3.Steel

4.Sand

Question 6 of 20

Question 7 of 20

7. Two uncharged objects A and B are rubbed against each other. When object B is placed near a negatively charged object C, the two objects repel each other. Which of these statements is true about object A?

1.Remains uncharged

2.Becomes positively charged

3.Becomes negatively charged

4.Unpredictable

Question 7 of 20

Question 8 of 20

8. Which is used for tuning a radio?

1.Solenoid

2.Electroscope

3.Fixed capacitor

4.Variable capacitor

Question 8 of 20

Question 9 of 20

9. The Coulomb’s law is valid for the charges which are:

1.Stationary and point charges

2.Moving and point charges

3.Stationary and large size charges

4.Moving and non-point charges

Question 9 of 20

Question 10 of 20

10. When a glass rod is rubbed with silk it becomes:

1.None of these

2.Becomes neutral

3.Positively charged

4.Negatively charged

Question 10 of 20

Question 11 of 20

11. According to Coulomb’s law, what happens to the attraction of two oppositely charged objects as their distance of separation increases?

1.Increase

2.Remains unchanged

3.Cannot be determined

4.Decrease

Question 11 of 20

Question 12 of 20

12. Which is not insulator?

1.Rubber

2.Mercury

3.Glass

4.Paper

Question 12 of 20

Question 13 of 20

13. When positive charge of 2 coulombs is placed at a point in an electric field, it experience a force of 6N. The intensity of electric at this point is:

1.6N C

2.12N C⁻¹

3.3N C⁻¹

4.61.5N C⁻¹

Question 13 of 20

Question 14 of 20

14. Used as dielectric:

1.Paper

2.All of these

3.Glass

4.Mica

Question 14 of 20

Question 15 of 20

15. Electric field lines

1.Always cross each other

2.Cross each other in the region of strong field

3.Cross each other in the region of weak field

4.Never cross each other

Question 15 of 20

Question 16 of 20

16. Similar charges always:

1.None of these

2.No effect

3.Repel

4.Attract

Question 16 of 20

Question 17 of 20

17. The force which is attractive as well as repulsive is:

1.Electromagnetic force

2.Magnetic force

3.Coulomb force

4.Gravitational force

Question 17 of 20

Question 18 of 20

18. When you rub a plastic rod against your hair several times and put it near some bits of paper, the pieces of papers are attracted towards it. What does this observation indicate?

1.The rod and the paper have the same charge

2.The rod acquires a positive charge

3.The rod and the paper are oppositely charged

4.The rod acquires a negative charge

Question 18 of 20

Question 19 of 20

19. Capacitance is defined as:

1.QV

2.V/Q

3.VC

4.Q/C

Question 19 of 20

Question 20 of 20

20. Two charged spheres are separated by 2mm. Which of the following would produce the greatest attractive force?

1.– 1q and – 4q

2.+ 2q and + 2q

3.+ 2q and – 2q

4.+ 1q and + 4

Question 20 of 20

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