If air is filled in an electric bulb, then the extremely hot tungsten filament would burn up quickly in the oxygen of air. So, the electric bulb is filled with...
No earth connection is required for the bulb connection as it does not draw heavy current and we hardly touch it. A socket for using an electric iron has an...
It takes some time to see objects in a dim room when we enter the room from bright sunshine outside because it takes some time to the small pupil of...
(i) A wire made of tungsten is used for filament of electric bulb because it has a high melting point and high resistivity.
(ii) A nichrome wire is used as a...
In the house hold electric circuit the appliances are connected in parallel and each appliance has an independent path for current and work at the same voltage. Hence, if one...