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Grade upto college level General Physics

why jockey should not be rubbed on a potentiometer wire ?

Profile image of aditya kashyap
12 Years agoGrade upto college level
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2 Answers

Profile image of awesome
12 Years ago
maybe.......to avoid the spark..as seen in general cases.
Profile image of ankit singh
5 Years ago
Because the rubbing of wire with jockey can change the uniformity of the cross sectional area of the wire and thereby affecting the fall of potential along with the wire. jockey should not be rubbed against potentiometer wire as it wil affect the cross sectional area of wire and hence final readings will get affected.