special resistance or residency.

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special resistance or residency.


                                     

It is also known as special resistance or residency.
                                 In R = ρ L / A, if L = 1m, A = 1mxm is taken then R = ρ occurs, that is, the ideal barrier is the resistance obstructed by one meter of the concrete object.


                  The unit of special resistance
                                                 R = ρ L / A
                               That is, ρ = RA / L
                                                  ∴ ρ = ohms - mxm / m = ohms - meters
                                 
                         Where m = m
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