Exam-style question
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If the IV graph of a conductor shows a straight line that does not pass through the origin, what can be inferred?.
- A.The conductor is ohmic
- B.The conductor has a voltage offset
- C.The conductor is non-ohmic
- D.The conductor has zero resistance
Model answer
What a good answer should say
- The conductor has a voltage offset
Explanation
Why this works
Evidence: The IV graph is a straight line that does not pass through the origin. Interpretation: The line has a non-zero intercept on the voltage axis.
Implication: The conductor has a voltage offset or internal resistance. Conclusion: The conductor is not purely ohmic; it shows a voltage offset.
Common mistake
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