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

Casey , 7 Years ago
Grade 10
anser 1 Answers
Vikas TU

Last Activity: 5 Years 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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