Exam-style question
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How is potential difference defined in terms of energy and charge?.
- A.Potential difference is the total energy in a circuit.
- B.Potential difference is energy transferred per unit charge.
- C.Potential difference is the resistance in a circuit.
- D.Potential difference is the flow of charge.
Model answer
What a good answer should say
- Potential difference is energy transferred per unit charge.
Explanation
Why this works
Potential difference (V) is defined as the amount of energy (E) transferred per unit charge (Q). This relationship can be expressed as V = E/Q.
Thus, the correct option is that potential difference is energy transferred per unit charge.
Common mistake
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