Q51. Differentiate between open and closed circuit.


Q52. What do the danger sign on poles and electric substation indicate? What measure should we take for all activities related to electricity?


Q53. How does an electric light bulb work?


Q54. Explain the structure of an electric bulb using diagram.


Q55. For each arrangement, find out whether the bulb glows or not.






Last modified: Thursday, 3 January 2019, 9:31 PM