Exam-style question
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Which statement best describes the IV graph of an ohmic conductor?.
- A.Straight line through the origin
- B.Curved line
- C.Horizontal line
- D.Vertical line
Model answer
What a good answer should say
- Straight line through the origin
Explanation
Why this works
Evidence: The IV graph is a straight line through the origin. Interpretation: This shows a constant proportionality between current and voltage.
Implication: The resistance is constant across the range. Conclusion: The conductor behaves ohmically.
Common mistake
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