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| 1. |
State whether all the bulbs we use work on the principle of heating effects of electric current ? |
| Answer» Solution :No, filament bulbs we use work on heatingeffect of ELECTRIC CURRENT . In these bulbs, in addition to light,lot unwanted heat is alsogenerated and this RESULTS in THEWASTAGE of electricity. We have different types of bulbs, known as fluoresent tubelights which work on a different principle. By using them we can reduce wastage of current. Compact fluorescentlamps (CFI). also reduce wastage can be fixed in the ordinary bulbs holders. | |