Q159 / 160 · AP EAMCET 2023 (16 May Shift 2) · Physics

The load resistance and the base-emitter voltage of a transistor in CE configuration are $5 \mathrm{k} \Omega$ and $0.02 \mathrm{~V}$ respectively. If the collector current is $2 \mathrm{~mA}$, then its voltage gain is

  • A
    $1000$
  • Correct answer
    B
    $500$
  • C
    $1500$
  • D
    $50$

Solution

$\mathrm{I}_{\mathrm{C}}=2 \times 10^{-3} \mathrm{~A}$ Voltage gain, $A_v=\frac{V_{C E}}{V_{B E}}=\frac{I_c R_c}{V_{B E}}$ $=\frac{2 \times 10^{-3} \times 5 \times 10^3}{.02}=500$

Hence, the correct answer is option: 'B'.

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