Exam-style question
Try this first
Which of the following best describes the slope of the IV graph for an ohmic conductor?.
- A.Slope equals resistance
- B.Slope equals reciprocal of resistance
- C.Slope equals zero
- D.Slope equals infinite
Model answer
What a good answer should say
- Slope equals reciprocal of resistance
Explanation
Why this works
Evidence: The slope of the IV graph is the ratio of current to voltage. Interpretation: For an ohmic conductor this ratio is the reciprocal of resistance.
Implication: The slope equals 1 divided by resistance. Conclusion: The slope of the IV graph equals the reciprocal of the resistance.
Common mistake
No common mistake is linked to this question yet.