Question

according to the resistivity formula

resistance is inversely proportional to area of cross section of the conductor

so why are wires made thin as area of cross section will be less and resistivity will be more??​

Answer 1

Answer:

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according to the resistivity formula

resistance is inversely proportional to area of cross section of the conductor

so why are wires made thin as area of cross section will be less and resistivity will be more??

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The resistance of a wire is directly proportional to it's length and inversely propositional to it's cross sectional area. Resistance also depends on the material of the conductor, or circuit element, generally increases with increasing temperature

MORE ABOUT IT :-

More collisions mean more resistance. second, the cross sectional area of the wires will affect the amount of resistance. A third variable that is known to affect the resistance to charge flow is the material that a wire is made of not all materials are created equal in terms of their conductive ability.