HOTS II — task. Science CBSE, Class 10.

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1. A primary cell has emf

$2\ volt$ . When short-circuited it gives a current of

$4\ amp$ . Its internal resistance in ohm will be

2. 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

$45$ ?

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55. HOTS II