How to manipulate Ohmic conductors

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SUMMARY

This discussion focuses on the manipulation of ohmic conductors to achieve non-ohmic behavior under specific conditions. It establishes that most metals exhibit ohmic characteristics at temperatures below 1000°C, transitioning to non-ohmic behavior as temperature increases. Traditional filament light bulbs are cited as examples of non-ohmic conductors, where resistance escalates with temperature. Additionally, the discussion highlights that a transistor's output behaves as an ohmic conductor without base current, becoming non-ohmic upon activation.

PREREQUISITES
  • Understanding of electrical resistance and conductivity
  • Knowledge of semiconductor physics, particularly transistors
  • Familiarity with thermal effects on electrical materials
  • Basic principles of electric motor operation
NEXT STEPS
  • Research the thermal properties of metals and their transition from ohmic to non-ohmic behavior
  • Study the operation and characteristics of transistors, focusing on base current effects
  • Explore the principles of electric motor mechanics and their impact on conductor behavior
  • Investigate the design and functionality of filament light bulbs in relation to resistance changes
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Electrical engineers, physicists, and students studying materials science or electrical engineering who are interested in the behavior of conductors under varying conditions.

mohau tshekoeng
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How to change an ohmic conductor to a non-omic conductor over a short period of time
 
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mohau tshekoeng said:
How to change an ohmic conductor to a non-omic conductor over a short period of time
Most metals show ohmic behaviour below about 1000C, raise the temperature and the behaviour is non - ohmic. Traditional filament light bulbs show non - ohmic behaviour, the resistance increases as the filament heats up at switch on.
 
The conductor can be the output of a transistor. Without base current, the conductor will be ohmic.
Close the switch and it will be non-ohmic.
Or, if the conductor is the armature of an electric motor, and the shaft is prevented from turning, it will be ohmic.
Release the shaft and it will be reactive.
 

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