Differentiate between filament lamp and fluorescent lamp.
1 Answer
The difference between filament lamp and fluorescent lamp are :
| Filament lamp | Fluorescent lamp | |
| 1. | Filament lamp converts 10% of electrical energy into light and 90% into heat energy. | Fluorescent lamp converts 30% of electrical energy into light energy and 70% electrical energy into heat energy. |
| 2. | Its lifespan is 1000 hours | Its lifespan is 3000 hrs |
| 3. | It is filled with inert gases or N2 | It is filled with mercury vapor. |
The biggest difference between the two is in how they produce light. Incandescent bulbs produce light by a heating a metallic filament until it starts to radiate light. On the other hand, fluorescent lamps produce light by exciting a gas and causing it to glow.When it comes to a traditional incandescent light bulb, electricity runs through a wire inside the bulb and heats it up. ... A fluorescent light bulb uses gas inside the bulb to light up: when electricity runs through it, it excites a mixture of gases, which are transformed into light.
The phosphor fluoresces to produce light. A fluorescent bulb produces less heat, so it is much more efficient. ... This makes fluorescent bulbs four to six times more efficient than incandescent bulbs. That's why you can buy a 15-watt fluorescent bulb that produces the same amount of light as a 60-watt incandescent bulb.
A filament lamp is a common type of light bulb. It contains a thin coil of wire called the filament. This heats up when an electric current passes through it, and produces light as a result. The resistance of a lamp increases as the temperature of its filament increases.