A battery consists of a variable number (n) of identical cells, each having an internal resistance r connected in series. The terminals of the battery are short - circuited. A graph of current (I) in the circuit verses the number of cells will be as shown in figure.

Options

A.
B.
C.
D.

Answer

C

Explanation

`I=(2E)/(2r)=(E )/(r )`.

`I=(nE)/(nr)=(E )/(r )`.
Therefore (c ).