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  3. 00 a potentiometer wire of length 100 cm has a res

00 A potentiometer wire of length 100 cm has a resistance of 10 2 It...

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00 A potentiometer wire of length 100 cm has a resistance of 10 2 It is connected in series with a resistance and a cell of emf 2 V and of negligible internal resistance A source of emf 10mVis balanced against a length of 40 cm of the potentiometer wire What is the value of external resistance a 790 52 b 890 2 c 990 2 d 1090 2 4

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