Question

15 cells each of EMF 2 volt are connected in series but two of them are connected wrongly. calculate the EMF of the combination.

Answer 1

24 volt is the answer
please mark it as brainliest

Answer 2

Dear Student,
Please find below the solution to the asked query:

Total emf is all the cells are connected correctly = E =  No. of cells ×​ emf of one cell = 32 ×​ 3 = 96 V
now,
if one cell is connected in reverse ppolarity then the emf differs by = 2×Eone cell
The difference of the EMF = 96-84 = 12 V

Now,

Now of cells connected in reverse polarity = n = 12/(2×3)
n = 12/6
n = 2 
Therefore, there are 2 cells connected in reverse polarity.



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