Differentiate between resistance and resistivity.

Asked by somyap | 28th Apr, 2010, 06:31: AM

Expert Answer:

Dear student,

Electrical resistance is given by the formula

where

 

is the length (in units of meters)
A is the cross sectional area (in units of m2), and
ρ is the resistivity (in units of Ω·m) of the material

 

So resistivity is a characteristic of every material while resistance is the opposition offered by that material when in an electrically conductive circuit.

I means the same thing. RESISTIVITY is a name applied to material conductivity . RESISTANCE is the material property

Hope this helps.

Team

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Answered by  | 28th Apr, 2010, 06:43: AM

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