Analog Electronics
The leakage electric current ICBO flows in

  the base and collector leads.
  the emitter and base leads.
  the emitter, base and collector leads.
  the emitter and collector leads.

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

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

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