Correct Answer - Option 4 : 1 volt
CONCEPT:
Electric potential (V):
- The potential difference between two points in an electric field may be defined as the amount of work done in moving a unit positive charge from one point to the other against the electrostatic force i.e.,
\({\rm{Electric\;potential\;}}\left( {\rm{V}} \right) = \frac{{{\rm{Work\;done\;}}\left( {\rm{W}} \right)}}{{{\rm{Charge\;}}\left( {\rm{q}} \right)}}\)
- The electric potential V at a point P due to point charge +q at a distance r is given by
\(V=\frac{1}{{4{\rm{\Pi }}\varepsilon_o }}\frac{q}{r}\)
EXPLANATION:
Given - Work done (W) = 1 joule and charge (q) = 1 C
- The potential difference across those points is
\(\Rightarrow {\rm{Electric\;potential\;}}\left( {\rm{V}} \right) = \frac{1\, J}{1\, C}=1\, J/C=1 \, Volt\)
