Science
Explain the following:
How does the resistance of a wire vary with its area of cross-section?
Related Questions
Explain the following:
Why is the tungsten used almost exclusively for filament of electric lamps?
Explain the following:
Why are the conductors of electric heating devices, such as bread-toasters and electric irons, made of an alloy rather than a pure metal?
Explain the following:
Why is the series arrangement not used for domestic circuits?
Explain the following:
Why are copper and aluminium wires usually employed for electricity transmission?