MCQ
what is the potential difference between two points, if $2J$ of work must be done to move a $4 mC$ charge from one point to another is:
- A$50 V$
- ✓$500 V$
- C$5 V$
- D$5000 V$
✓
Answer
Correct option: B.
$500 V$
The total work done $=$ energy transferred.
So, we might see the equation energy $=$ voltage $\times$ charge, $E = V \times Q,$ written as,
work $=$ voltage $\times$ charge, $W = V \times Q.$
In this case, the charge is $4 mC$, that is, $0.004 C$ and work done is $2J.$
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