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To get maximum current through a resist...

To get maximum current through a resistance of `2.5Omega,` one can use m rows of cells, each row having n cells. The internal resistance of each cell is `0.5 Omega` what are the values of n and m, if the total number of cells is 45.

A

`m= 3 , n = 15`

B

`m= 5 , n = 9`

C

`m= 9, n = 5`

D

`m= 15 , n = 3`

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The correct Answer is:
A
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