drive the formula for factors on which resistance depends
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resistance depends upon length and surface area. resistance is directly proportional to length and inversely proportional to surface area.
r=l/a
=r=rho.l/a
where rho is the unit of resistivity
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Factors on which resistance of a conductor depends are : Length of the conductor, Cross-sectional Area of the conductor and temperature. Both resistivity and resistance depends on temperature. Therefore Resistance= rho L/A.
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