# Potential and Current Distributions over a Disk Electrode with Vibrating Probe

Potential and Current Distributions over a Disk Electrode with Vibrating Probe

This Demonstration shows the primary current distribution over a disk electrode immersed in an electrolyte of constant conductivity and polarized at a constant voltage. The current distribution can be shown as current lines or as equipotential contours. In addition, the potential difference measured by a vibrating probe located in the solution is also determined. You can drag the probe, at position (, ), and vary the amplitude of the vibration. The effect of the solution conductivity on the signal measured by the probe can also be demonstrated. Conductivities of 0.001 S/cm and 0.1 S/cm correspond roughly to solutions of 10 mM NaCl and 1 M NaCl, respectively.

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