Question

To get maximum current in a resistance of $3\Omega$ one can use n rows of m cells connected in parallel. If the total no. of cells is 24 and the internal resistance of a cell is$0.5\Omega$ then

• A. m = 12, n = 2
• B. m = 8, n = 4
• C. m = 2, n = 12
• D. m = 6, n = 4

Answer 1

The correct option is A m = 12, n = 2

In this question $R=3\Omega ,mn=24,r=0.5\Omega$ and $R=\frac{mr}{n}$. On putting the values we get n = 2 and m = 12.