51. If electric resistance is to be decreased, then the number of resistances should be connected in . . . . . . . .
52. Good conductor of electricity is
53. How much work is done in moving a charge of 3 C across two points with a potential difference of 10 V?
54. The filament of a halogen lamp is an alloy of
55. After long periods of use, a grey spot develops on the inside of a bulb. This is because
56. If the current and resistance are 10 A and 50 Ω respectively. Find the potential difference.
57. Indicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength.
58. Which of the following law describes the relation between the current flowing through a metallic wire and the Potential difference in its ends?
59. Assertion (A): In India, electricity distribution companies calculate the consumption of electricity in kWh.
Reason (R): Electrical system in India works at a frequency of 60 Hz.
Reason (R): Electrical system in India works at a frequency of 60 Hz.
60. The working principle of power transformer is based on . . . . . . . .
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