Analog Electronics
Which of the following is expected to have highest input impedance?

  Common collector bipolar transistor
  JEFT amplifier.
  CE bipolar transistor.
  MOSFET.

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Analog Electronics
A working diode must have

 High resistance when forward or reverse biased
 Low resistance when forward biased, while high resistance when reverse bias
 Low resistance when forward or reverse biased
 High resistance when forward biased, while low resistance when reverse bias

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