Exam-style question
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What characterizes ohmic conductors?.
- A.Current is directly proportional to potential difference.
- B.Current is inversely proportional to potential difference.
- C.Resistance changes with temperature.
- D.Resistance is constant regardless of voltage.
Model answer
What a good answer should say
- Current is directly proportional to potential difference.
Explanation
Why this works
Ohmic conductors are defined by the relationship where current is directly proportional to potential difference, following Ohm's law. The key difference is that in ohmic conductors, resistance remains constant, while in non-ohmic conductors, resistance can vary.
This applies in circuits where components like resistors maintain a linear relationship between current and voltage, concluding that this behavior is typical for materials like metals at constant temperature.
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