ટ્રાન્ઝીસ્ટ એમ્પ્લિફાયર માટે \(CE\) સંરયનામાં \(V _{ CC }=1\,V,\;R _{ C }=1\,k \Omega, R _{ b }=100\,k \Omega\) અને \(\beta=100\) હોય, તો બેઝ પ્રવાહ \(I_b\) નું મૂલ્ય ........ છે.

A \(I _b=1.0\,\mu A\)
B \(I _{ b }=0.10\,\mu A\)
C \(I_b=100\,\mu A\)
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 \(-I_c R_c+V_{c c}=0\) \(I_c=\frac{V_{ cC }}{R_c}=\frac{1}{1 \times 10^3}\) \(I_c=10^{-3}\,A\) \(\beta=\frac{I_c}{I_b}\) \(I_b=\frac{10^{-3}}{100} \Rightarrow 10^{-5}\,A \Rightarrow I_b=10\,\mu A\)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

સૂચી \(-I\) ને સૂચી \(-II\) સાથે જોડો

સૂચી \(-I\)	સૂચી \(-II\)
\((a)\) પૃથ્વીની સપાટીથી \(10\, km\) ઊંચાઈ	\((i)\) થર્મોસ્ફિયર
\((b)\) પૃથ્વીની સપાટીથી \(70\, km\) ઊંચાઈ	\((ii)\) મેસોસ્ફિયર
\((c)\) પૃથ્વીની સપાટીથી \(180\, km\) ઊંચાઈ	\((iii)\) સ્ટ્રેટોસ્ફિયર
\((d)\) પૃથ્વીની સપાટીથી \(270\, km\) ઊંચાઈ	\((iv)\) ટ્રોપોસ્ફિયર

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