[" 42.A potentiometer wire "10m" long ha...

[" 42.A potentiometer wire "10m" long has a "],[" resistance of "40Omega" .It is connected in series "],[" with a resistanced box and a "2v" storage cell."],[" If the potential gradient along the wire is "],[0.01V/m" the resistance unplugged in the box "]

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[" 42.A potentiometer wire "10m" long has a "],[" resistance of "40Omega" .It is connected in series "],[" with a resistanced box and a "2v" storage cell."],[" If the potential gradient along the wire is "],[0.01V/m" the resistance unplugged in the box "]

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