is the resistance of the filament of a bulb higher or lower than that of ordinary wires
Answers
Explanation:
However, when choosing a material for a particular application, many different properties of materials must all be considered together (such as: melting point (MP), boiling point (BP), thermal conductivity, electrical resistivity, cost, etc.). For example, while Nichrome does have a much higher resistivity than Tungsten, Tungsten has a much higher melting point than Nichrome (Nichrome MP = 1400 C, Tung MP = 3422 C). For a typical incandescent light bulb, the Tungsten filament operates at approximately 2500 Celsius; notice that this is actually above the melting point of Nichrome!
Therefore, when you compare the melting points of the materials to the operating temperatures of a light bulb, you can quickly see why Tungsten is the preferred choice for filament wires. I hope that this helps answer your question, and we hope to hear from you again soon!
Answer:
Higher than ordinary wires.
Explanation:
The filament of the bulb has higher resistance than ordinary wires because the resistance of bulb is made of tungsten which offers very high resistance than any other wires.
The filament of bulb has following advantage :-
1) It doesn't melt even at high temperatures.
2) It doesn't oxide readily at high temperatures.
3) It has high resistivity.
hence, the filament of bulb has higher resistance than ordinary wires.