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JEE Mains · Physics · STD 12 - 14. Semicondutor electronics

दिए गए ट्रांजिस्टर प्रवर्धक परिपथ के \(\mathrm{CE}\) (उभयनिष्ठ उत्सर्जक) अभिविन्यास में, \(\mathrm{V}_{\mathrm{CC}}=1 \mathrm{~V}, \mathrm{R}_{\mathrm{c}}=1 \mathrm{k} \Omega\), \(\mathrm{R}_{\mathrm{b}}=100 \mathrm{k} \Omega\) एवं \(\beta=100\) है आधार धारा \(\mathrm{I}_{\mathrm{b}}\) का मान है :

  1. A \(I _b=1.0\,\mu A\)
  2. B \(I _{ b }=0.10\,\mu A\)
  3. C \(I_b=100\,\mu A\)
  4. D \(I _{ b }=10\,\mu A\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(I _{ b }=10\,\mu A\)

Step-by-step Solution

Detailed explanation

Considering the transistor in saturation mode \(V _{ CE }=0\) Using KVL \(-I_c R_c+V_{c c}=0\) \(I_c=\frac{V_{ cC }}{R_c}=\frac{1}{1 \times 10^3}\) \(I_c=10^{-3}\,A\) \(\beta=\frac{I_c}{I_b}\) \(I_b=\frac{10^{-3}}{100} \Rightarrow 10^{-5}\,A \Rightarrow I_b=10\,\mu A\)
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