Electrostatics 2

1. Which capacitor consists of 2 thin strips of paper which are separated by a metal foil?

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2. State the SI UNIT of capacitance?

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3. Which capacitor is made by passing a direct current (d.c ) between aluminum foils with a suitable electrolyte (aluminum borate) in between?

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4. Why is an electrolytic capacitor preferred to a paper capacitor?

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5. C is proportional to A/d and C = (k x A)/d where C = capacitance. Which of the following statements CORRECTLY describe the other parameters in the highlighted formula?

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6. Objects with a sharp point discharge charges faster?

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7. Which of the following statements about capacitor is CORRECT?

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8. The direction of an electric field at a point is the direction in which a positively charged particle would move if placed at that point. True or False?

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9. What IS THE name given to a measure of the amount of charge the capacitor can store when connected to a given voltage?

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10. The space around a charged body where the force of attraction or repulsion is felt is called?

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11. Give the formula of the energy stored in a capacitor

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12. Mention the importance of lighting arrestor

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13. Electric field lines are parallel at a uniform field however they are closely arranged at?

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14. The resultant capacitor in a parallel connection is the sum of individual capacitor CT = C1 + C2 + C3

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15. Which of the following is among the applications of a capacitor?

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16. Lighting is produced when 2 opposite charged clouds attract one another strongly and neutralize each other causing thunder and lightning. True or False?

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17. If a capacitor is connected to a circuit which has a higher voltage than the capacitors rated maximum voltage then the capacitor shall become a conductor. True or False?

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18. Do you expect to detect charges on the inside surface of a charged hollow conductor/ cylinder?

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19. Which type of capacitor is able to vary its capacitance and is popular used in radio receivers for tuning?

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20. Capacitance is directly proportional to the area of plates overlap and inversely proportional to the distance of separation between 2 plates or more. True or False?

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21. Mention the 2 types of connections in which capacitors can be connected in a circuit?

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22. Give the SI unit of the energy stored in a capacitor?

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23. Between a spherical object and a pear shaped body of equal charge which of the two has a higher charge concentration according to charge distribution?

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24. Which of the following statements is CORRECT about when a capacitor is discharged?

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25. Electric field lines do not cross one another. True or False?

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26. Electric field lines are parallel at a uniform field however they are widely spread at?

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27. Objects which have a sharp point have a higher charge concentration. True or False?

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28. Name the device used to store charges?

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29. Mention 3 types of capacitors

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30. The resultant capacitance in a series connection is the sum of the reciprocal of the capacitance of individual capacitors i.e. 1/Ctotal = 1/C1 + 1/C2 + 1/C3

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31. Which of the following statements is CORRECT when a capacitor is charged by a battery?

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32. What does a Lighting arrestor comprise of?

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33. Define capacitance

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34. Mention the influencing factors of capacitance

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35. Which of the following is among the properties of an electric field?

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