Abstract
The simple Ohm's law \ensuremath{\eta}${\mathit{j}}_{\mathrm{\ensuremath{\parallel}}}$=${\mathit{E}}_{\mathrm{\ensuremath{\parallel}}}$ is not satisfied in the a/2\ensuremath{\lesssim}r\ensuremath{\le}a region of the REPUTE-1 reversed-field-pinch plasma. Fluctuation-induced electric fields, such as 〈v\ifmmode \tilde{}\else \~{}\fi{}\ifmmode\times\else\texttimes\fi{}B\ifmmode \tilde{}\else \~{}\fi{}〉, are not sufficient to account for \ensuremath{\eta}${\mathit{j}}_{\mathrm{\ensuremath{\parallel}}}$-${\mathit{E}}_{\mathrm{\ensuremath{\parallel}}}$ at the edge. Current diffusion due to magnetic fluctuations, carried by fast electrons rather than bulk cold electrons, sustains the edge parallel equilibrium current.
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