Ex. 14 : A potentiometer wire has a length U1 4 m and resistance 42. What resistance must be connected in series with the potentionmeter wire and a cell of e.m.f. 2V having internal resistance 20 to get a potential drop of 103 V/cm along the wire ?
Ex. 14 : A potentiometer wire has a length U1 4 m and resistance 42. What resistance must be connected in series with the potentionmeter wire and a cell of e.m.f. 2V having internal resistance 20 to get a potential drop of 103 V/cm along the wire ?
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Transcribed Image Text:Ex. 14 : A potentiometer wire has a length of
4 m and resistance 42. What resistance must
be
connected
in
series
with
the
potentionmeter wire and a cell of e.m.f. 2V
having internal resistance 20 to get a potential
drop of 10 3 V/cm along the wire ?
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