Question

Moving 4.0 coulombs of charge through a circuit requires 20 joules of electric energy. What is the potential difference across this circuit?

Answer 1

Given

Charge is q=4.0 C

Work done, W=20 J

To find

The potential energy

Step-by-step explanation

We know potential difference is work done per unit charge

Thus,

`\begin{gathered} V=(W)/(q) \\ \Rightarrow V=(20)/(4) \\ \Rightarrow V=5\text{ V} \end{gathered}`

Conclusion

The potential difference is 5 V