Question

The n rows each containing m cells in series are joined in parallel. Maximum current is taken from this combination across an external resistance of 3 . If the total number of cells used is 24 and internal resistance of each cell is 0.52, then

Answer 1

Answer:

m=12,n=2

Current is maximum when equivalent resistance is equal to external resistance of 3 ohm.

Now total resistance is nm×0.5. (Resistances are parallel so they are directly added to each other)

According to question: 

nm×0.5=3

m/n=6

thanks for watching