To verify Ohm's law, a student connects the voltmeter across the battery as, shown in the figure. The measured voltage is plotted as a function of the current, and the following graph is obtained If $V_0$ is almost zero, identify the correct statement
AThe potential difference across the battery is $1.5\, V$ when it sends a current of $1000\, mA$
BThe $emf$ of the battery is $1.5\, V$ and the value of $R$ is $1.5\,\Omega $
CThe $emf$ of the battery is $1.5\, V$ and its internal resistance is $1.5\,\Omega $
DThe value of the resistance $R$ is $1.5\,\Omega $
JEE MAIN 2019, Medium
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CThe $emf$ of the battery is $1.5\, V$ and its internal resistance is $1.5\,\Omega $
c $V=E-I r$
When $V=V_{0}=0 \Rightarrow 0=E-I r$
$ \therefore$ $E=r$
When $1=0, V=E=1.5 \,\mathrm{V}$
$\therefore r=1.5\, \Omega$
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