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      Question

      Which of the following represents non-ohmic resistance ?

      A Nichrome Correct Answer Incorrect Answer
      B Copper Correct Answer Incorrect Answer
      C Torch Bulb Correct Answer Incorrect Answer
      D More than one of the above Correct Answer Incorrect Answer
      E None of the above Correct Answer Incorrect Answer

      Solution

      Explanation: A torch bulb (light bulb) exhibits non-ohmic behavior because its resistance increases as temperature increases. When current flows through the filament, it heats up, changing its resistance

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