Physics · Electrical Measuring Instruments
The scale of moving iron instruments is non-linear (cramped at the lower end) because:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Deflection torque is proportional to the square of the current✓
- 2Pointer weight is too high
- 3Coil resistance changes with temperature
- 4Damping torque is absent
Correct answer
Deflection torque is proportional to the square of the current
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