31. A wire bound standard resistor uses manganin or constantan. It is because
32. If the current flowing through a wire is (I) and the charge of an electron is (e), then the number of electrons flowing in (t) seconds can be determined by with the help of?
33. Identify the SI unit of electrical resistance.
34. Besides, . . . . . . . . non-metals are bad conductors of electricity.
35. At magnetic poles, the angle of dip is
36. Of the four substances mentioned in the following options, which one has the highest electrical resistivity at 20°C as compared to the other three?
37. Curie-Weiss law is obeyed by iron at a temperature
38. A proton and an electron are located in a uniform electric field. They will experience
39. A 100W electric lamp is used 5 hours per day. How much energy will the lamp consume in 3 days?
40. Which of the following does not have magnetic properties like a permanent magnet?
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