Factors on Which the Specific Resistance of a Wire Depends

The specific resistance of a wire depends on the temperature and on the material that is used in the wire.

Specific resistance is defined as the resistance offered per unit length and unit cross-sectional area when a voltage of known value is applied. Following is the formula of specific resistance:

\(rho =frac{RA}{L}\)


⍴ is the specific resistance

R is the resistance

A is the cross-sectional area

L is the length of the wire


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