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Class 10 > Learn Science > Why is tungsten metal used in bulbs but not in fuse...
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Why is tungsten metal used in bulbs but not in fuse wires?

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Expert in IIT NEET entrance exams

Tungsten having high melting point 4500degree of Fahrenheit For the preparation of fuse wire Low melting point material about 200degree centigrade required Fuse wire generally made up of led and tin alloy
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Tungsten is a metal whose melting point is very high. It is used in bulbs because tungsten will not catch fire in the bulb. But it is not used in fuse wires because fuse wires need a low melting point.
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I am an experienced Educator, Teacher and Tutor, with 40 years of experience.

Tungsten is used in bulbs because of its high melting point; it is not used in fuse wire because it requires a low melting point metal.
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Computer Wizard

A tungston has a very high melting point and thus it wont burn in a bulb but will not fulfil the purpose of a fuse wire to burn away in case of excess current. SO cant be used
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A tungston has a very high melting point and thus it wont burn in a bulb but will not fulfill the purpose of a fuse wire to burn away in case of excess current. Fuse wire need to have low melting point ,when excess current flows,the wire melts and circuit is broken.
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Tungsten has high melting point which is suitable for bulbs but due to this it cant be used in fuse wires as it needs low melting point.
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Physics Teacher

Tungston metal won't burn inside the bulb and fuse can burn inside the metal in case of excess of current
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