AP EAMCET · PHYSICS · Semiconductors
If \(R_C\) and \(R_B\) are respectively the resistances of in collector and base sides of the circuit, and \(\beta\) is the current amplification factor, then the voltage gain of a transistor amplifier in common emitter configuration is
- A \(\beta R_C R_B\)
- B \(\frac{\beta}{R_C R_B}\)
- C \(\frac{\beta R_B}{R_C}\)
- D \(\frac{\beta R_C}{R_B}\)
Answer & Solution
Correct Answer
(D) \(\frac{\beta R_C}{R_B}\)
Step-by-step Solution
Detailed explanation
The voltage gain of a CE configuration transistor is \(A_V=\frac{V_O}{V_I}=\frac{V_C}{V_B}=\frac{I_C R_C}{I_B R_B}=\left(\frac{I_C}{I_B}\right)\left(\frac{R_C}{R_B}\right)=\beta \cdot \frac{R_C}{R_B}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- One mole of a gas at a pressure \(2 \mathrm{~Pa}\) and temperature \(27^{\circ} \mathrm{C}\) is heated till both pressure and volume are doubled. What is the temperature of the gas?AP EAMCET 2021 Medium
- A tension of \(20 \mathrm{~N}\) is applied to a copper wire of cross sectional area \(0.01 \mathrm{~cm}^2\), Young's modulus of copper is \(1.1 \times 10^{11} \mathrm{~N} / \mathrm{m}^2\) and Poisson's ratio is 0.32 . The decrease in cross sectional area of the wire isAP EAMCET 2013 Medium
- The capacitance of a spherical condenser is \(1 \mu \mathrm{F}\). If the spacing between the two spheres is \(1 \mathrm{~mm}\), the radius of the outer sphere isAP EAMCET 2020 Easy
- One mole of an ideal diatomic gas undergoes a transition from to along a path as shown in figure. The change in internal energy of the gas during the transition is
AP EAMCET 2020 Medium - Which of the following is NOT a reversible process?AP EAMCET 2021 Easy
- A body is projected vertically upwards at time \(t=0\) and it is seen at a height \(H\) at time \(t_1\) and \(t_2\) second during its flight. The maximum height attained is ( \(g\) is acceleration due to gravity)AP EAMCET 2009 Hard
More PYQs from AP EAMCET
- The distance between two parallel planes \(a x+b y+c z+d_1=0\), \(a x+b y+c z+d_2=0\) is given by \(\frac{\left|d_1-d_2\right|}{\sqrt{a^2+b^2+c^2}}\).
If the plane \(2 x-y+2 z+3=0\) has the distances \(\frac{1}{3}\) and \(\frac{2}{3}\) units from the planes \(4 x-2 y+4 z+\lambda=0\) and \(2 x-y+2 z\) \(+\mu=0\) respectively, then the maximum value of \(\lambda+\mu\) isAP EAMCET 2023 Easy - The correct order about the number of unpaired electrons present in the following complexes is
\[
\left.\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{4-} \underset{\text { II }}{\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}} \underset{\text { III }}{\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6}\right]^{2+}
\]AP EAMCET 2022 Easy - What is the molecular formula of the product formed when benzene is reacted with ethyl chloride in presence of anhydrous aluminium chloride?AP EAMCET 2004 Medium
- Let the point represent the Argand plane. Let the curves and be the loci of satisfying the conditions is purely imaginary and , respectively. Then the point of intersection of the curves and other than the origin, isAP EAMCET 2019 Medium
- The standard deviation of the numbers isAP EAMCET 2018 Easy
- The radius of any circle touching the lines \(3 x-4 y+5=0,6 x-8 y-9=0\) isAP EAMCET 2020 Easy