The preceding paper (Part I) dealt with the study of electrode polarization phenomena by means of steady‐state overpotential measurements. In this paper, two other manifestations of polarization are explored simultaneously with the steady‐state measurements. The first is the transient decay of overpotential with time following current interruption, while the second is the a‐c response as a function of frequency, best described in terms of complex impedance plots. It is shown that at high where the charge‐transfer mechanism dominates, the overpotential decay curves can be quantitatively interpreted, while the contribution of the electrode behavior to the complex impedance is a single depressed circular arc. Both measurements give a double layer capacitance at each electrode ∼100 μF/cm2. At low , where concentration polarization develops at the cathode, the transient curves show a variable effective exchange current which can be calculated from the limiting current of the steady‐state data. Correspondingly, the a‐c impedance plots show the beginning of an additional arc. These results are completely consistent with the mechanisms developed in Part I .