: The resistance of a potentiometer wire is 8 and its length is 8 m. A high resistance box and a 2 volt battery are placed in series with it. What should be the value of the resistance in the box if it desired to have a potential drop of 1 microvolt per mm ?
: The resistance of a potentiometer wire is 8 and its length is 8 m. A high resistance box and a 2 volt battery are placed in series with it. What should be the value of the resistance in the box if it desired to have a potential drop of 1 microvolt per mm ?
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