Why is the filament of a bulb made of a thin tunstance wire
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Answer:
because it's melting point is very high si it doesn't gets melt even if the bulb gets hot..... Hope this helps you and mark it as brainliest and follow me
Common electric bulb is known as incandescent bulb where a filament is heated to a very high temperature to emit light through a process called black body radiation. Heat is generated due to resistivity when electricity is passed through an object. A hot object constantly emits electromagnetic radiation. The wavelength of the radiation emitted depends on the temperature of the object. As the temperature of the object increases the wavelength of the radiation shortens. When the wavelength of emitted electromagnetic waves is in the range of 750 Nano meters to 400 Nano meters we get visible light. An object gets heated when electricity is passed through it if the electrical resistivity levels are high. Tungsten has a high resistivity and a melting point of 3422 degrees Celsius. In an incandescent bulb the filament is heated to a temperature of around 2500 degrees Celsius when it starts emitting visible light. As the melting point of Tungsten is higher than this temperature and it also has high electrical resistivity, it is used as filaments in incandescent bulbs