Question

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Answer 1

We know,

$r = p \frac{l}{a}$

Resistance is inversely proportional to Area of cross section, that is resistance will increase if area of cross section decreases and vice versa...

Answer 2

The resistance of a wire is inversely proportional to the area of cross section.

It means that when the resistance is larger the area of cross section is low and when the area of cross section is larger the resistance will be low.

Wish it helps!

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