Analog Electronics
The depletion region with in a pn junction is reduced when the junction has :

 forward bias.
 all of these.
 zero bias.
 reverse bias.

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Analog Electronics
The arrowhead on the transistor symbol points in the direction of

  minority carrier flow in the emitter region.
  conventional electric current flow in the emitter region.
  majority carrier flow in the emitter region.
  electron flow in the emitter region.

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