Exam-style question
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Define potential difference and work done in the context of moving masses. What is the key difference between them?.
Model answer
What a good answer should say
- Potential difference is the work done per unit charge when moving a charge between two points in an electric field, while work done is the energy transferred when a force moves an object over a distance.
- The key difference is that potential difference relates to electric charges, whereas work done can apply to any force acting over a distance.
Explanation
Why this works
This question tests the understanding of two fundamental concepts in physics related to energy transfer. By defining both terms and identifying their key difference, students demonstrate their grasp of the concepts and their applications in different contexts.
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