In an experiment of verification of Ohm’s law following observations are obtained.

Potential difference $V$ (in volt)	$0.5$	$1.0$	$1.5$	$2.0$	$2.5$
Current $I$ (in ampere)	$0.2$	$0.4$	$0.6$	$0.8$	$1.0$

Draw a characteristic $V-I$ graph and use this graph to find:
the current $I$ when the potential difference $V$ is $0.75 \mathrm{V}$.