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Practice #14,729
Q
यदि किसी चालक तार में 10 मिली ऐम्पीयर की धारा प्रवाहित करने पर इसके सिरों पर 2.5 वोल्ट का विभवान्तर उत्पन्न होता है तो चालक तार का प्रतिरोध ज्ञात करो ।
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