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

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

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Analog Electronics
For an NPN transistor in normal bias

  the emitter junction has high resistance.
  Je is forward biased and Jc is reverse biased.
  only majority carriers cross the collector junction.
  only holes cross the collector junction.

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