Analog Electronics
The amount of time between the creation and disappearance of a free electrons is called

 life time of the carriers
 drift velocity
 recombination
 bound electrons

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Analog Electronics
In a transistor amplifier, the reverse saturation electric current ICO

  double for every 1° rise in temperature.
  increase linearly with the temperature.
  double for every 10° rise in temperature.
  double for every 5° rise in temperature.

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