What is an earth electrode?(a) electrode that is connected to earth(b) material used for earthing(c) electrode connected to the circuit(d) electrode which is connected to the mainsI had been asked this question during an interview.This intriguing question comes from Measurement of Earth Resistance topic in portion Measurement of Resistance of Electrical Measurements

What is an earth electrode?(a) electrode that is connected to earth(b)

1.	What is an earth electrode?(a) electrode that is connected to earth(b) material used for earthing(c) electrode connected to the circuit(d) electrode which is connected to the mainsI had been asked this question during an interview.This intriguing question comes from Measurement of Earth Resistance topic in portion Measurement of Resistance of Electrical Measurements
Answer» Correct answer is (b) material used for earthing The best I can explain: ELECTRODE connected to the MAIN is basically a source of e.m.f. CONDUCTING material that is used for connecting electrical machinery to the earth is known as an earth electrode.

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