Analog Electronics
When pn junction is reverse biased

All of these
 the witdh of depletion layer increases
 a small current flows through it because of minority carriers
 it offers a very high resistance

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

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

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