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OpenStudy (anonymous):
a slide potentiometer is Balanced against 1.0812v standard cell at slide contact of 40.2 cm. for an unknown emf the slide contact is 11.9 cm what is the emf of the unknown cell.
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OpenStudy (anonymous):
emf is proportional to length e1/e2 = l1/l2 find e2
OpenStudy (anonymous):
0.30v thanks
OpenStudy (anonymous):
you're welcome
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