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Tap every way Ohm's law can fail

Exercise and reference answers

Questions
  1. Items
    1. Text
      V depends on I non-linearly
      Matches the category
      Yes
    2. Text
      The V-I relation depends on the sign of V
      Matches the category
      Yes
    3. Text
      The V-I relation is non-unique
      Matches the category
      Yes
    4. Text
      The conductor is made of copper
      Matches the category
      No
    5. Text
      The current is large
      Matches the category
      No
    Category
    A way Ohm's law FAILS, per the chapter

Explanation

syllabus is explicit that Ohm's law is not a fundamental law of nature and lists exactly three failure modes. Source: syllabus Physics Part I, Ch 3 Current Electricity.
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