Question

Tungsten is a metal and a good conductor(low resistance) of heat.When used in bulb filaments it provides high resistance and helps it to glow. Does it have high or low resistance? Justify.

Pls answer fast...

Answer 1

The reason tungsten is used is because it has the highest melting temperature of any element at 3600K, where as nichrome melts at 1600 K which is almost to cold to give off light (maybe dark red). To generate a lot of heat you need a big resistance.

Answer 2

Explanation:

The movement of electrons is the reason for good conductivity property shown by metals.Thus, we can say that Tungsten has a high melting point, and it has high resistivity towards heat. Tungsten is a poor conductor of electricity even though it is a metal.

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