How does the resistance of a wire vary with its :(a) area of cross-sec

1.	How does the resistance of a wire vary with its :(a) area of cross-section ?(b) diameter ?
Answer» Resistance is inversely proportional to the area of cross section of the wire. The more the area of cross section of the wire,the less is the resistance and the less the area,the more is the resistance.If the diameter of the current carrying conductor or wire will be more, then the electrons will get more space to move through the conductor. So if the diameter increases, then the resistance decreases. So, yes, resistance varies with diameter.

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