The volume resistivity of a prismatic sample is calculated by the equation (cross-section)*(resistance)/(length). Common units are Ω⋅cm, but other units may also be used.
Luciano Mino
Material at 20°C
Annealed copper
Length
ft
Area
in²
Resistance
mΩ
Conductance
kS
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When two (or more) resistances are in parellel, then the resitence provided by the two together is given by reciprocal addition, i.e. 1/(total resistence) = (1/resistance1) + (1/resistance2).
