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A non-ohmic resistor doesn't have a constant resistance. A ohmic resistor has a constant resistance.
An 'ohmic' resistor is one which obeys Ohm's Law. For Ohm's Law to apply, the resistance of a circuit must be constant over the range of incremental voltages applied to it. If the resistance changes over an incremental range of voltages, then it is said to be 'non-ohmic', and it does not obey Ohm's Law.
which law follow non ohmic substances
no.....thermistors are not ohmic.
Diode is a non-ohmic conductor since in diodes current-voltage relation ship does't obey Ohm's law....the relationship between current and voltage is nonlinear here,...
ohmic conductor does obey ohm 's law. non ohmic conductor does not obey ohm's law.
the resistant in ohmic devices is constant because it depend on temperature ..and temperature is constant independent of polarity of potential difference...btin non ohmic the tempt increase with voltage which increase due to the heat increase beacue of power dispition....collision of electrons increases find more resistenc for passing so resistence increases
iron,gold
ohmic conductors are those which obey ohm's law
A 10-ohm resistor is considered ohmic if its resistance remains constant regardless of the applied voltage or current. Ohmic behavior indicates a linear relationship between voltage and current, following Ohm's Law (V = IR). If the resistance of the 10-ohm resistor remains consistent regardless of changes in voltage or current, then it can be classified as ohmic.
Vacuum tubes are non-ohmic devices because their resistance changes with voltage and current. This non-linearity in resistance is due to the nature of the electron flow within the vacuum tube, causing it to exhibit non-ohmic behavior.
ohmic ocnductor is a material which obeys ohm's law: i.e. the voltage and current are directly proportional 2 each other anda non-ohmic ocnductor is a material which doesn't obey ohm's law:)