Forward-biased junctions are less sensitive than reverse-biased ones because the Joule heat of forward-biased junctions is dissipated through a thicker layer of the material, as compared to the narrow depletion region in reverse-biased junction.
2.
The instantaneous electrical power entering such a device is completely dissipated as Joule heat to the surrounding, viz . no extra energy remains in the system after it has been brought from one resistance state "'x i "'to another one "'x j " '.
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