Analog Electronics
The voltage follower has a

  closed - loop bandwidth of zero.
  closed - loop voltage gain of unity.
  small open - loop voltage gain.
  large closed - loop output impedance.

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Analog Electronics
Pinch-off voltage in a JFET is

 the drain voltage that gives zero drain current.
 the gate to source voltage that gives unity drain current.
 the drain voltage that gives infinite drain current.
 the gate to source voltage that gives zero drain current.

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Analog Electronics
The magnitude of electric current ICBO

  depends largely upon emitter-base junction base potential.
  is generally greater in silicon than in germanium transistor.
  depends largely upon the emitter doping.
  increases with the increase in temperature.

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