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Metallic micro electrodes have impedance ________ compared to conventional electrodes?

Metallic micro electrodes have impedance ________ compared to conventional electrodes? Correct Answer very high

The very high impedance of the metal micro-electrodes is due to the characteristics of the small area metal-electrolyte interface. Because of very high impedance of micro electrodes, amplifiers with extremely high input impedance are required to avoid loading the circuit and to minimize the effects of small change in interface impedance.

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