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Question
Give a scientific reason.
Tungsten metal is used to make a solenoid type coil in an electric bulb.
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Solution 1
- The electric bulb operates under the principle of the heating effect of electric current.
- The bulb’s solenoid-type coil has a very high melting point and high resistance.
- The solenoid-type coil of the lightbulb becomes heated to a high temperature (up to 3400°C) and begins to shine when current is delivered through it.
As a result, tungsten metal creates a solenoid-type coil in an electric bulb.
Solution 2
- The temperature of a bulb’s filament determines how much light it emits. It rises as the temperature does.
- The material used to construct a lightbulb's filament should have a very high melting point so that it can be heated to a high temperature by running a current through it without melting. We are able to get more light as a result. Tungsten has an extremely high melting point. It is possible to heat tungsten wire to around 3400°C.
Hence, tungsten is used to make a solenoid type coil (filament) in an electric bulb.
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