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The material used in limb surface electrode is ___________

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The material used in limb surface electrode is ___________

(a) German silver

(b) Copper

(c) Gold

(d) Platinum

The question was asked during an interview for a job.

I'm obligated to ask this question of Electrodes for ECG in chapter Bioelectric Signal and Electrodes of Biomedical Instrumentation

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The correct answer is (a) German silver

The best explanation: The most common type of electrode most routinely used for recording ECG are rectangular or circular surface limb electrodes. The material used in them is German silver, nickel silver or nickel plated steel. They are applied to the surface of the body with electrode jelly.

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