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Q.

Is it true that the electric cell maintains a constant potential difference?


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a

True

b

False 

answer is A.

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Detailed Solution

Electric cell do not actually maintain a constant potential, its potential falls with use. However it provides nearly constant potential.
Inside the cell there occurs chemical reactions, these reactions create the difference of potential across the terminals of the cell.  Now the reactions occur nearly at constant rate so it maintains nearly constant potential difference.
 
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