Question

Do all materials obey ohm’s law?discuss.



please say answer very fast..​

Answer 1

No, some materials do not obey ohm 's law they are called non -ohmic.

reason:

They have non-linear relationship between current & voltage. They have variable resistance. For example, semiconductors.

Answer 2

Answer:

Ohm's law is an empirical relation which accurately describes the conductivity of the vast majority of electrically conductive materials over many orders of magnitude of current. However some materials do not obey Ohm's law, these are called non-ohmic.

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