Potential difference across a cell and current through a cell is … - Vidyadip

MCQ

Potential difference across a cell and current through a cell is shown in graph. A battery consists of such identical $40$ cells. Max current supplied by the battery through a load of $2.5\,\Omega $ equal to .............. $A$

A
$20$
B
$12$
✓
$4$
D
$15$

✓

Answer

Correct option: C.

$4$

c
$\varepsilon=2$ $\mathrm{volt},$ $\mathrm{r}=1 \,\Omega$

$m n=40$

Current is maximum

$\mathrm{R}=\frac{\mathrm{nr}}{\mathrm{m}} \Rightarrow 2.5=\frac{\mathrm{n}}{\mathrm{m}} 1$

$\mathrm{n}=\mathrm{m}(2.5)$

$m=4, n=10$

$I=\frac{10 E}{5}=4 \,A$

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