Saved Bookmarks
| 1. |
Do not search from internet .....The resistance of hot filament of bulb is about 10 times the cold resistance .what will be the resistance of 100W-220V lamps ,when not in use. |
|
Answer» R= V²/PR= 220×220/100R= 484ohm.It is GIVEN resistance of hot lamp is 10 times the cold lamp.Hence, R cold = 484/10 = 48.4 ohm ans.. HOPE IT HELPS.. |
|