41. Domestic electrical wiring is basically a
42. Which one of the following statements is correct with regard to the material of electrical insulators?
43. If a 50 W bulb consumes 1000 J of energy, then the time taken by the bulb is?
44. How much work is done to moving a charge of 5C across two points having a potential difference of 11V?
45. A current of 0.6A is drawn by an electrical device in 10 minutes. Find the amount of electric charge flows through the circuit.
46. The symbol represents.
47. What is the difference between a CFL and an LED Lamp?
1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material.
2. The average life span of a CFL is much longer than of an LED lamp.
3. A CFL is less energy efficient as compared to an LED lamp.
Which of the statements given above is/are correct?
1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semi-conductor material.
2. The average life span of a CFL is much longer than of an LED lamp.
3. A CFL is less energy efficient as compared to an LED lamp.
Which of the statements given above is/are correct?
48. When electrical energy is converted into motion
49. How much work is done in moving a charge of 5C across two points having a potential difference of 17V:
50. The resistivity of an electric conductor depends on:
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