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
JEE MAIN 2019, Medium
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$V=E-I r$
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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