# Dictionary:Polarization resistance

The factor employed in overvoltage theory, relating overvoltage to current density *J*:

*R* is the gas constant, *T* the absolute temperature, *n* the number of molar equivalents, *F* the Faraday, and *J*_{o} the exchange current density, all in cgs units. The units of polarization resistance are ohm-cm^{2}.