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Results tagged with electricity
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user 272678
The study of the presence and flow of electric charge. Charges, currents, fields, potentials.
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The relationship between impedance, resistance and resistivity and which are purely material...
The resistivity of a wire, $\rho$, is purely a material property. For a wire of length, $l$, and cross-sectional area, $A$, the resistance, $R$, is given by
$$
R=\frac{\rho l}{A}
$$
which depends on t …
- 197