A potentiometer wire has a length of 4 m and resistance of 402. What resistance must be connected in series with potentiometer wire and a cell of e.m.f. 2 volt having internal resistance 202 to get a potential drop of 10-³ V/cm along the wire.
A potentiometer wire has a length of 4 m and resistance of 402. What resistance must be connected in series with potentiometer wire and a cell of e.m.f. 2 volt having internal resistance 202 to get a potential drop of 10-³ V/cm along the wire.
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