AP 7th Science Mock Test 2023 For Chapter – 7 : “ Electricity ” Online Practice Test

1. A dry cell in torch light converts

2. A fuse wire is made up of

3. 1 KW = ______ Watts .

4. This symbol represents ?

 

5. Which lamp reduces wastage of electricity _______

6. Unit of electricity is _______

7. Positive terminal of dry cell is _____

8. In 1831 ______ invented dynamo fist time .

9. The device used to close an electric circuit is ____

10. In the cell (battery) this container works as negative pole.

11. If the circuit is open, then current

12. Guess the reasons for not glowing the bulb in the circuit

13. Choose the correct statement .

14. Find the statement which is not true .

15. Choose the correct order of make your own cell experiment .

1. Fill the bottles with sulphuric acid
2. Insert copper wires and zinc strips into the cap of the injection bottle
3. Take a discharged dry cell, break it and take the outer zinc can
4. The bottles are closed with the caps carrying copper wires and zinc strips

16. The simple cell that is prepared by our own

17. Government's advice to wide use of this type of bulb

18. World country's and India's advice to mind generating power through

19. The symbol represents  ______

20. Find out the missing part in the diagram

21. The given symbol explains

22. Cell positive terminal Wire ? Wire Bulb Wire Cell negative terminal

23. The electric circuit closed can be identified with ______

24. The dry cell based on "Leclanche cell" is widely used in

25. The amount of heat liberated through the filament in an electrical appliance depends on _______

26. Modern fuse is _______

27. Which is cheaper ?

28. Where is the biggest power station located near Vijayawada ?

29. Wasting electricity means______

30. The brighter the bulb, the higher its wattage and ______ used by it .

31. Which are true here ?

32. Choose the correct statement

33. The electricity supplied to our houses comes ffrm

34. Electric cell produces electricity from ______ in it.

35. The following one is a source of electric energy

36. An electric cell have ______ terminals .

37. A _____ is a modified form of Leclanche cell .

38. A dry cell is easy to handle because they have ______

39. 2 or more cells joined together form a

40. The cells in torch light are arranged in  _____

41. If an electric circuit provides a complete path for current to flow between the two terminals of the electric cell, then it is called a

42. In an electric circuit, the direction of current is taken to be from ___________  of the electric cell .

43. The simple electric device used to break the electrical circuit or to complete it is ______ .

44. In series connection the connections are from _____

45. In parallel connection the connections are from _____

46. When one terminal of all bulbs are connected to a common end then the bulbs are said to be in ____

47. When bulbs are connected one after other in succession then the bulbs are said to be in ____

48. When bulbs are connected in parallel, if one bulb doesn't glow, the other bulbs

49. If one bulb doesn't glow remaining will continue to glow in parallel connection, because ______

50. The filament of electric bulb converts electrical energy into _____

51. The following electrical appliances contain a coil of wire made of Nichrome .

52. Heating element in electric appliances is _____ .

53. Nichrome is a _____

54. A tabular electric discharge lamp in which light is produced by the fluorescence of phosphorus coating inside the tube is _____

55. The tube light in which light is produced by the fluorescence of ______

56. An electric fuse is a small piece of wire made of a ______

57. The following device is used as safe device in electric circuit is _____

58. M.C.B is have switches which automatically turn off when _____

59. Most of the electricity that we use at home and schools is

60. A bulb with high wattage i.e, 100 W consumes ____

61. A 100 W bulb glows with _____

62. Th full form of A.C is ______

63. D.C stands for _____

64. Which unit of bulb helpful to know how powerful the bulb is ?

65. 'One unit' of electricity is _____

66. A  measure of electricity is _____

67. CFL stands for _______

68. A minimum Circuit diagram indicates the connection of _______

69. Longer line in the symbol of cell represents _________

70. Smaller line in the symbol of cell represents _________

71. The following symbol represents

72. Which of the following is used as a source of light ?

73. Arun buys 4 bulbs of 15 W, 40 W, 60 W and 100 W . Which one should be used in his room as night bulb ?

74. Find 'X' in the following figure

75. Find 'X' in the following figure