Analog Electronics
The β of a transistor may be determined directly from the curve plotted between

  VBE and IE for constant VCE.
  VCE and IC for constant IE.
  VCE and IC for constant IB.
  VCE and IE for constant IB.

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Analog Electronics
For an NPN transistor in normal bias

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

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