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Answer :

Given

Charge is q=4.0 C

Work done, W=20 J

To find

The potential energy

Explanation

We know potential difference is work done per unit charge

Thus,

[tex]\begin{gathered} V=\frac{W}{q} \\ \Rightarrow V=\frac{20}{4} \\ \Rightarrow V=5\text{ V} \end{gathered}[/tex]

Conclusion

The potential difference is 5 V

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