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non ohmic devices are diodes, LED's, Thermistors, LDR(light dependent resistors, cells in series.
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Is diode ohmic or non-ohmic conductor?
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,...
is ohm s law true for all conductors?
No. It only applies to a very limited range of conductors that are classified as being 'linear' or 'ohmic'. Most materials are 'non-linear' or 'non-ohmic', and these do NOT obey Ohm's Law. Non-linear conductors include tungsten and non-linear devices include diodes. For Ohm's Law to apply, the ratio of voltage to current must remain constant for variations in voltage; if it doesn't, then Ohm's Law doesn't apply. Period!
What is an exception to ohm's law?
Most conductors and electronic devices are 'exceptions' to Ohm's Law. Ohm's Law only applies when the ratio of voltage to current remains constant for variations in voltage. Materials which behave in this way are termed 'linear' or 'ohmic'. But mostmaterials do not behave in this way, and are termed 'non-linear' or 'non-ohmic'.In simple terms, if you plot a graph of voltage against current, and the result is a curve, then that material does not obey Ohm's Law.
What is a linear resistor?
which obey ohms law ANSWER: Not all potentiometers are linear some are made to follow a logarithm function some follows an exponential function. A linear potentiometer will have a linear curve. Materials that obey Ohm's Law are called 'linear' or 'ohmic'; those that don't are called 'non-ohmic' or 'non-linear'.
State the imitation of ohm's law?
imitation of ohms law is that it can be applied only to linear devices it cannot be allowed to non linear devices...
Is vacuum tube ohmic or non-ohmic and why?
Vacuum tubes are non-ohmic devices
Example of non -ohmic and ohmic materials?
iron,gold
Why the resistant in ohmic devices is constant and in non ohmic not constant?
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
Is Thermistor ohmic or non-ohmic?
no.....thermistors are not ohmic.
Differentiate between ohmic and non ohmic substances?
which law follow non ohmic substances
What are ohmic and non - ohmic conductors?
ohmic conductor does obey ohm 's law. non ohmic conductor does not obey ohm's law.
What is the difference between an ohmic resistor and a non-ohmic resistor?
A non-ohmic resistor doesn't have a constant resistance. A ohmic resistor has a constant resistance.
What is the difference between ohmic and non ohmic elements?
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.
What are Ohmic and Non - Ohmic conductor?
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:)
What are non ohmic resistances?
your dad
Give the example of non-keyboard input devices?
scanner and its type ,mouse ,joy stick ,tracball,
When the voltage across the ends of a piece of wire is doubled what effect does this have on the current in the wire?
current doublesAnswerIt depends on whether the wire is ohmic or non-ohmic. If it is ohmic, then the current will also double. If, like tungsten, it is non-ohmic, then it depends.... because doubling the voltage will cause its resistance to increase.Ohmic materials obey Ohm's Law, whereas non-ohmic materials do not.
