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ICSE Class 10 Answered

why are some conductors like LED bulb etc. non-ohmic resistors. what characteristics does it have to make it non-ohmic?
Asked by saibaba1069 | 19 Jul, 2020, 05:41: PM
answered-by-expert Expert Answer
 A nonOhmic device is one that does not have a constant resistance. A light bulb is a simple example; the filament undergoes huge changes in temperature when current passesthrough it. Therefore, the resistance of the filament is not constant,  it increaseswith increased current.non-ohmic resistor does not obey the ohm's law.The graph of current vs voltage is not a straight line for non-ohmic resistors.
Answered by Utkarsh Lokhande | 20 Jul, 2020, 10:57: AM
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