Physics · Earth Resistance Measurement
What is the primary reason for supplying AC to electrodes during earth resistance measurement?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1To reduce the magnitude of current through the meter
- 2To eliminate the effect of back EMF interference due to electrolytic action✓
- 3To provide an electrostatic shield
- 4To protect the winding wire inside the meter
Correct answer
To eliminate the effect of back EMF interference due to electrolytic action
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