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 graph is obtained :
If is almost zero, identify the correct statement :
The potential difference across the battery is when it sends a current of
The emf of the battery is and the value of R is
The emf of the battery is and its internal resistance is
The value of the resistance R is
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When
is zero in the graph, 
which is EMF of the will
Also when
, then 
Option 1)
The potential difference across the battery is
when it sends a current of 
Option 2)
The emf of the battery is
and the value of R is 
Option 3)
The emf of the battery is
and its internal resistance is 
Option 4)
The value of the resistance R is