Physics

Problem

To get maximum current through a resistance of

2.5\,\Omega

, 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) 3, 15 (b) 5, 9 (c) 9, 5 (d) 15, 3 (a) 3, 15 (b) 5, 9 (c) 9, 5 (d) 15, 3