Why is Tungsten used almost exclusively for filament of electrical lamps ?

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Solution

Pure tungsten has some amazing properties including the highest melting point $(3695 K)$ , lowest vapor pressure, and greatest tensile strength out of all the metals. Because of these properties it is the most commonly used material for light bulb filaments.

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Q. Question 18 (a)
Explain:
(a) Why is the tungsten used almost exclusively for filament of electric lamps?

Q. Why is the tungsten used almost exclusively for filament of electric bulb.

Tungsten do not oxidize at high temperature. Can it be the reason for tungsten used almost exclusively for filament of electric lamps?

Q. Explain the following:
(a) Why is tungsten used almost exclusively for filament of electric lamps?
(b) Why are copper and aluminium wires usually used for electricity transmission?
(c)Why is nichrome alloy used for making elements of electric irons?

Tungsten is used almost exclusively for filament of incandescent lamps because tungsten has a high melting point ( $3380^{\circ}$ C) and becomes incandescent (i.e., emits light at a high temperature) at 2400 K.

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Why is Tungsten used almost exclusively for filament of electrical lamps ?

Pure tungsten has some amazing properties including the highest melting point (3695K), lowest vapor pressure, and greatest tensile strength out of all the metals. Because of these properties it is the most commonly used material for light bulb filaments.

Pure tungsten has some amazing properties including the highest melting point $(3695 K)$ , lowest vapor pressure, and greatest tensile strength out of all the metals. Because of these properties it is the most commonly used material for light bulb filaments.