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Question: Answered & Verified by Expert
A transistor has a base current of $1 \mathrm{~mA}$ and emitter current $90 \mathrm{~mA}$. The collector current will
PhysicsSemiconductorsBITSATBITSAT 2010
Options:
  • A $90 \mathrm{~mA}$
  • B $1 \mathrm{~mA}$
  • C $89 \mathrm{~mA}$
  • D $91 \mathrm{~mA}$
Solution:
1352 Upvotes Verified Answer
The correct answer is: $89 \mathrm{~mA}$
$\quad \mathrm{I}_{\mathrm{C}}=\mathrm{I}_{\mathrm{E}}-\mathrm{I}_{\mathrm{B}}=90-1=89 \mathrm{~mA}$

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