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[" A "2" volt battery,a "15Omega" resist...

[" A "2" volt battery,a "15Omega" resistor and a "],[" potentiometer of "100cm" length,all are connected "],[" in series.If the resistance of potentiometer wire "],[" is "5Omega" ,then the potential gradient of the "],[" potentiometer wire is "],[[" (a) "0.005V/cm," (b) "0.05V/cm],[" (c) "0.02V/cm," (d) "0.2V/cm]]

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