Analog Electronics
In CB configuration, the output V-I characteristics of a transistor are drawn by taking

  VCE versus IC for constant IE.
  VCB versus IB for constant IE.
  VCB versus IB for constant IE.
  VCB versus IC for constant IE.

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Analog Electronics
The magnitude of electric current ICBO

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

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