Explain Why are copper and aluminium wires usually employed for electricity transmission?

Explain the following : Why are copper and aluminium wires usually employed for electricity transmission?

Explain the following: (a) Why is the tungsten used almost exclusively for filament of electric lamps? (b) Why are the conductors of electric heating devices, such as bread-toasters 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 resistances of a wire vary with its area of cross sections? (e ) Why are copper and aluminium wires usually employed for electricity transmission?

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.

Give reason for the following: (i) Electric bulbs are usually filled with chemically inactive gases like nitrogen and argon. (ii) Copper and aluminium wires are usually employed for electricity transmission. (iii) Fuse wire is placed in series with the device.

Suppose uniusulated copper or aluminium wires are used for flow of electricity from pole to pole in the street. Do you expect a better flow in summer or winter and why?

Give reasons: Aluminium wire is used to make transmission cables.

Give reasons : (i) Conc. HNO_(3) can be transported in aluminium container. (ii) A mixture of dilute NaOH and aluminium pieces is used to open drain. (iii) Graphite is used as lubricant. (iv) Diamond is used as an abrasive. (v) Aluminium alloys are used to make aircraft body. (vi) Aluminium utensils should not be kept in water overnight. (vii) aluminium wire is used to make transmission cables.