Why are filaments of incandescent lamps made of thin tungsten wire ?

The resistance of an incandescent lamp is

The resistance of an incandescent lamp is

The resistance of an incandescent lamp is

The filament of an electric bulb is made of tungsten.

The filament of an electric bulb is made of a thin wire of :

Incandescent lamp, discharge lamp , C.F.L, LED lamp, arc lamp are given for observation . Answer the following questions after observing them. Which metal is used to make filament of an incandescent lamp ? What are the advantages of using this metal as a filament ?

Explain the following : (a) Why is tungsten used almost axclusively for filament of incandescent lamp ? (b) Why are the conductors of electric heating devices, such as toaster and electric irons, made of an alloy rather than a pure metal ? ( c) Why is the series arrangement not used for domestic circuits ? (d) How does the resistance of a wire vary with its cross-sectional area ? (e ) Why are copper and aluminimum wires usually employed for electricity transmission.

Explain the following : (a) Why is tungsten used almost exclusively for filament of incandescent lamp ? (b) Why are the conductors of electric heating devices, such as toaster and electric irons, made of an alloy rather than a pure metal ? ( c) Why is the series arrangement not used for domestic circuits ? (d) How does the resistance of a wire vary with its cross-sectional area ? (e ) Why are copper and aluminium wires usually employed for electricity transmission.

Give scientific reasons: The filament of an electric bulb is made of tungsten.