100 cells each of $e.m.f.\ 5\ V$ and internal resistance $1\ ohm$ are to be arranged so as to produce maximum current in a $25\ ohm$ resistance. Each row is to contain equal number of cells. The number of rows should be

Question

Dr. Abubacker · Accepted Answer

(a) If $m =$ Number of rows
And $n =$ Number of cells in a row
Then $m 	imes n = 100$ …(i)
Also condition of maximum current is $R = \frac{nr}{m}$
$\Rightarrow 25 = \frac{1 	imes n}{m} \Rightarrow n = 25\ m$ …(ii)
On solving (i) and (ii), $m = 2$

Q. 100 cells each of $e.m.f.\ 5\ V$ and internal resistance $1\ ohm$ are to be arranged so as to produce maximum current in a $25\ ohm$ resistance. Each row is to contain equal number of cells. The number of rows should be

Explanation

Reviewed by Dr. Abubacker

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