Physics — Resistivity & Conduction
Resistivity, its temperature dependence and current density.
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R = \frac{\rho L}{A}
\rho = \rho_0[1 + \alpha(T - T_0)]
J = \frac{I}{A} = \sigma E
\sigma = \frac{1}{\rho}
Resistivity, its temperature dependence and current density.
R = \frac{\rho L}{A}
\rho = \rho_0[1 + \alpha(T - T_0)]
J = \frac{I}{A} = \sigma E
\sigma = \frac{1}{\rho}