41. How many types of connections in electric circuit are-
42. A voltmeter is an instrument which can detect the presence of . . . . . . . .
43. Among various electrical safety devices, one based on the heating effect of electric current is called a
44. Safety fuse wire used in domestic electrical appliances is made of metal of low
45. Which among the following is not a conductor of electricity?
46. If two resistances of 2 Ω are connected in parallel, what will be the resulting resistance?
47. Alternating current is converted to direct current
48. For which of the following substances, the resistance decreases with increase in temperature?
49. What is in substance that makes it super conductor substance?
50. What gases are filled in fluorescent tube?
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