Question

Difference between ohmic and non ohmic devices

Answer 1

Answer

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

Answer 2

Answer:

ohmic

if ohm's law were always true , then as V

across a resistor increases , so whould

I through it, and their ratio

non ohmic

in actually , ohm's law holds only for current that aren't too large