Physics · Electrical Measuring Instruments
A moving coil instrument gives a full-scale deflection when a current of 20 mA flows through it when a potential difference of 50 mV is applied across its terminals. To convert it into a voltmeter to measure from 0 V to 500 V, the series resistance to be added is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 125110.5 Ω
- 225997.5 Ω
- 324997.5 Ω✓
- 424985.8 Ω
Correct answer
24997.5 Ω
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