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26 A potentiometer wire has length 4 m a...

26 A potentiometer wire has length 4 m and resistance 82 The resistance that must be connected in series with the wire and an accumulator of e.m.f. 2 V, so as to get a potential gradient 1 mV per cm on the wire is (2015) U Mark for review later o 4402 0 4812 0321 0 40 52

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