On moving a charge of $20$ coulombs by $2 \;cm , 2 \;J$ of work is done, then the potential difference between the points is (in $volt$)
A$0.2$
B$8$
C$0.1$
D$0.4$
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C$0.1$
c (c) By using $W = Q.V $ $==>$ $\Delta V = \frac{2}{{20}} = 0.1\,volt$
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