Exam-style question
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A graph shows the electric potential (V) against distance (d) for a point charge. The graph indicates that as the distance increases, the electric potential decreases. What does this imply about the behavior of electric potential in relation to distance from a point charge?.
Model answer
What a good answer should say
- The electric potential decreases as the distance from the point charge increases, indicating an inverse relationship.
- This behavior is consistent with Coulomb's law, which states that electric potential is inversely proportional to distance.
- Therefore, the implication is that the further away you are from the charge, the weaker the electric potential becomes.
Explanation
Why this works
This answer is strong because it directly addresses the relationship shown in the graph, linking it to Coulomb's law. It tests the understanding of electric potential behavior in electric fields, which is a key concept in the topic of electric potential.
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