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GATE ECE 2010 | Question-8

In the silicon BJT circuit shown below, assume that the emitter area of transistor $\text{Q1}$ is half that of transistor $\text{Q2.}$

The value of current $I_0$ is approximately

  1. $0.5 \mathrm{~mA}$
  2. $2 \mathrm{~mA}$
  3. $9.3 \mathrm{~mA}$
  4. $15 \mathrm{~mA}$
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