31. . . . . . . . . metal is used to make the filament of a light bulb-
32. An element offers high resistance for conduction is called:
33. Magnetic keepers are used to protect magnets from
34. Which of the following is not based on practical applications of thermal effects of electricity?
35. How much current will flow through a body if it touches the terminal 1,00,000Ω resistance of a 12 volt battery?
36. Let us consider a copper wire having radius r and length l. Let its resistance be R. If the radius of another copper wire is 2r and the length is $$\frac{l}{2}$$, then the resistance of this wire will be
37. Electricity consumption bill is based on the measurement of
1. Watt
2. Voltage
3. Ohm
4. Ampere
Select your answer:
1. Watt
2. Voltage
3. Ohm
4. Ampere
Select your answer:
38. "The sum of emf's and potential differences around a closed loop equals zero" is a consequence of
39. Which of the following instruments is used to measure electric current?
40. Which of the following is an example of the conversion of electrical energy into mechanical energy?
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