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Which one of the following statements regarding Ohm's law is not correct?

Options

  1. AOhm's law is an assumption that current through a conductor is always directly proportional to the potential d
  2. BA conducting device obeys Ohm's law when the resistance of a device is independent of magnitude and polarity o
  3. CA conducting material obeys Ohm's law when the resistance of material is independent of the magnitude and dire
  4. DAll homogeneous materials obey Ohm's law irrespective of whether the field is within range or strong

Correct answer

D. All homogeneous materials obey Ohm's law irrespective of whether the field is within range or strong

Step-by-step solution

All homogeneous materials like conductors, semiconductors obey Ohm's law within limited range of electric field. In the case of strong field, there are departures from Ohm's law.

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