Exam-style question
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If the IV graph of a resistor is linear, what does that indicate about its resistance?.
- A.Constant
- B.Increasing with voltage
- C.Decreasing with voltage
- D.Zero
Model answer
What a good answer should say
- Constant
Explanation
Why this works
Evidence: The IV graph is linear. Interpretation: The ratio of voltage to current is constant.
Implication: The resistance does not change with applied voltage. Conclusion: The conductor has a constant resistance.
Common mistake
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