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Maharashtra Class 10 Answered

give two difference between resistance and resistivity of wire  
Asked by ndshah14 | 23 Sep, 2019, 12:48: PM
answered-by-expert Expert Answer
Resistance  Resistivity
The property due to which the substance
resist the flow of electrons is called resistance.  
Resistivity is the resistance of a wire of that material of
unit length and unit area of cross section.
SI unit of resistance is Ohm (Ω) SI unit of resistivity is Ohm-metre (Ωm)
R equals V over I
rho space equals space fraction numerator R cross times A over denominator calligraphic l end fraction
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