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

A Ohm's law is an assumption that current through a conductor is always directly proportional to the potential difference applied to it
B A conducting device obeys Ohm's law when the resistance of a device is independent of magnitude and polarity of applied potential difference
C A conducting material obeys Ohm's law when the resistance of material is independent of the magnitude and direction of applied electric field
D All homogeneous materials obey Ohm's law irrespective of whether the field is within range or strong

Correct Answer: All homogeneous materials obey Ohm's law irrespective of whether the field is within range or strong

Bissoy MCQ
#Physics GK Chapter Wise #Electricity And Magnetism

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