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Solution - What Resistance Should Be Connected in Series with a Potentiometer Wire and a Cell of E.M.F. 2 V - Metre Bridge

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Question

A potentiometer wire has a length of 4 m and a resistance of 5 Ω. What resistance should be connected in series with a potentiometer wire and a cell of e.m.f. 2 V having internal resistance 1 Ω to get a potential gradient of 10-3 V/cm ?

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