Analog Electronics
For transistor action

  all of these.
  Je must be forward biased and Jc should be reverse biased.
  the emitter should be heavily doped.
  the base region must be very thin and lightly doped.

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

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

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