A battery consists of a variable number ' $n$ ' of identical cells (having internal resistance 'r' each) which are connected in series. The terminals of the battery are short-circuited and the current $I$ is measured. Which of the graphs shows the correct relationship between $\mathrm{I}$ and $\mathrm{n}$ ?

Home » A battery consists of a variable number ‘ ‘ of identical cells (having internal resistance ‘r’ each) which are connected in series. The terminals of the battery are short-circuited and the current is measured. Which of the graphs shows the correct relationship between and ?

A battery consists of a variable number ‘ $n$ ‘ of identical cells (having internal resistance ‘r’ each) which are connected in series. The terminals of the battery are short-circuited and the current $I$ is measured. Which of the graphs shows the correct relationship between $\mathrm{I}$ and $\mathrm{n}$ ?

Physics

A battery consists of a variable number ‘ $n$ ‘ of identical cells (having internal resistance ‘r’ each) which are connected in series. The terminals of the battery are short-circuited and the current $I$ is measured. Which of the graphs shows the correct relationship between $\mathrm{I}$ and $\mathrm{n}$ ?

Solution:

Answer is (3)

I $=\frac{\mathrm{n} \varepsilon}{\mathrm{nr}}=\frac{\varepsilon}{\mathbf{r}}$

So, $I$ is independent of $n$ and $I$ is constant.

i

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