Physics · Electrical Measuring Instruments
The ohmmeter section of an earth tester gives a direct resistance reading because:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The deflection of the pointer depends on the absolute value of current in the current coil
- 2The instrument converts alternating current directly into equivalent resistance
- 3The instrument scale is pre-calibrated solely for soil resistivity measurement
- 4The deflection is proportional to the ratio of the voltage across the potential coil to the current in the current coil✓
Correct answer
The deflection is proportional to the ratio of the voltage across the potential coil to the current in the current coil
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