Physics · Electrical Instruments
A PMMC voltmeter has a resistance of 1 kΩ and reads 100 V correctly at 0°C. If its resistance increases by 10% at 50°C, what will the instrument read when a true voltage of 100 V is applied at 50°C?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1111.1 V
- 290.0 V
- 389.0 V
- 490.9 V✓
Correct answer
90.9 V
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