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:
- A50 V
- B500 V
- C5 V
- D5000 V
✓
Answer
- 500 V
Explanation:
The total work done = energy transferred.
So, we might see the equation energy = voltage x charge, E = V × Q, written as,
work = voltage x charge, W = V × Q.
In this case, the charge is 4 mC, that is, 0.004 C and work done is 2J.
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