Mathematics · Electrical Measuring Instruments
200 Ω आंतरिक प्रतिरोध (कुंडली प्रतिरोध) वाले एक PMMC उपकरण में 1 mA की पूर्ण पैमाने पर विक्षेपण धारा (full scale deflection current) होती है। इस उपकरण को 20 V मापने के लिए एक वोल्टमीटर में परिवर्तित किया जाना है। आवश्यक गुणक प्रतिरोध (multiplier resistance) के मान की गणना कीजिए।
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