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Question

What are ohmic and non ohmic resistors? What is the difference between them?
 


Solution

Ohmic resistors are the resistors which obey ohms law.
Non ohmic resistors are those which do not obey ohms law.

in ohmic resistors current is directly proportional to voltage.
in non ohmic resistors there is no linear relationship.

we get a straight line graph on plotting the values of current and voltage in ohmic resistors.
we don't get a linear graph in case of non ohmic resistors 

examples of ohmic resistors are carbon and metals.
Examples of non ohmic resistors are semiconductors.

Physics

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