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The method of comparing two emfs of a cell r=1 E=24 V=15 r=12

The method of comparing two emfs of a cell
r=1
E=24
V=15
r=12

Grade:10

1 Answers

Vikas TU
14149 Points
one year ago
Dear student 
Potentiometer is a device used to compare the e.m.f. (electromotive force) of two cells, to measure the internal resistance of a cell, and potential difference across a resistor. It consists of a long wire of uniform cross-sectional area and of 10 m in length.
Hope this help 
Good Luck 

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