In a transistor,the base is made very thin and is lightly doped with an impurity because:

  • A
    to enable the collector to collect $95\%$ of the holes or electrons coming from the emitter side
  • B
    to enable the emitter to emit a small number of holes or electrons
  • C
    to save the transistor from higher current effects
  • D
    none of the above

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In the shown common emitter amplifier circuit,$\beta = 80$ and $V_{BE} = 0.7\,V$. The value of $R_C$ is:

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