AP EAMCET · PHYSICS · Semiconductors
A transistor is connected in common emitter configuration. The collector supply is and the voltage drop across a resistor of in the collector circuit is . If the current gain factor is , the base current is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
For a common emitter configuration, collector current is IC IC=0.5800=0.625×10-3 A ; α=ICIE Now, IB=IE-IC IB=ICα-IC=IC1α-1 IB=26×10-6 A
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
- Match the following (Take the relative strength of the strongest fundamental forces in nature as one)
The correct match isAP EAMCET 2014 Easy - A steel wire of length \(20 \mathrm{~cm}\) and area of crosssection \(1 \mathrm{~mm}^2\) is tied rigidly at both the ends. When the temperature of the wire is changed from \(40^{\circ} \mathrm{C}\) to \(20^{\circ} \mathrm{C}\), find the change in its tension. Given, the coefficient of linear expansion for steel is \(1.1 \times 10^{-5}{ }^{\circ} \mathrm{C}^{-1}\) and Young's modulus of steel is \(2.0 \times 10^{11} \mathrm{Nm}^{-2}\).AP EAMCET 2020 Hard
- A light wave has a frequency of \(4 \times 10^{14} \mathrm{~Hz}\) and a wavelength of \(5 \times 10^{-7} \mathrm{~m}\) in a medium. The refractive index of the medium isAP EAMCET 2020 Easy
- Two plates of same area are placed in contact. Their thickness as well as their thermal conductivities are in the ratio \(2: 3\). The outer surface of one plate is maintained at \(10^{\circ} \mathrm{C}\) and that of the other at \(0^{\circ} \mathrm{C}\). Temperature at the common surface isAP EAMCET 2021 Medium
- Assertion A An astronaut inside a massive spaceship orbiting around the earth will experience a finite but small gravitational force.
Reason \(\mathbf{R}\) The centripetal force necessary to keep the spaceship in orbit around the earth is provided by the gravitational force between the earth and the spaceship.AP EAMCET 2011 Easy - A circular disc of mass 20 kg and radius 1 m is rotating about an axis passing through its center and perpendicular to its plane with an angular velocity of \(2 \mathrm{rad} \mathrm{s}^{-1}\). Then the rotational kinetic energy of the disc isAP EAMCET 2025 Easy
More PYQs from AP EAMCET
- Let \(f: R \rightarrow R\) be defined by
\(f(x)=\left\{\begin{array}{ccc}\alpha+\frac{\sin [x]}{x}, & \text { if } & x>0 \\ 2, & \text { if } & x=0 \\ \beta+\left[\frac{\sin x-x}{x^3}\right], & \text { if } & x < 0\end{array}\right.\)
where, \([x]\) denotes the integral part of \(x\). If \(f\) continuous at \(x=0\), then \(\beta-\alpha\) is equal toAP EAMCET 2012 Medium - If \(A, B, C\) and \(D\) are points whose position vectors are \(\hat{\mathbf{i}}+\hat{\mathbf{j}}+\hat{\mathbf{k}}, 4 \hat{\mathbf{i}}-\hat{\mathbf{j}}+2 \hat{\mathbf{k}}, 5 \hat{\mathbf{i}}+\hat{\mathbf{j}}\), \(7 \hat{\mathbf{i}}+2 \hat{\mathbf{j}}+3 \hat{\mathbf{k}}\) respectively, then the projection of \(\mathbf{A B}\) on \(\mathbf{C D}\) isAP EAMCET 2019 Easy
- What is the molar conductivity of \(\mathrm{CH}_3 \mathrm{CO}_2 \mathrm{H}\) at infinite dilution?
Given that,
\(\wedge_{\mathrm{m}}^{\mathrm{o}}\left(\mathrm{CH}_3 \mathrm{CO}_2\right)_2 \mathrm{Ba}=\mathrm{x}_1 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\)
\(\begin{aligned} & \wedge_{\mathrm{m}}^{\mathrm{o}}\left(\mathrm{BaCl}_2\right)=\mathrm{x}_2 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1} \\ & \wedge_{\mathrm{m}}^{\mathrm{o}}(\mathrm{HCl})=\mathrm{x}_3 \mathrm{~S} \mathrm{~cm}^2 \mathrm{~mol}^{-1}\end{aligned}\)AP EAMCET 2022 Medium - The change in internal energy when \(20 \mathrm{~g}\) of a gas is heated from \(25^{\circ} \mathrm{C}\) to \(35^{\circ} \mathrm{C}\) at constant volume is (Specific heat capacity of the gas at constant volumeAP EAMCET 2023 Easy
- A wheel which is initially at rest is subjected to a constant angular acceleration about its axis. It rotates through an angle of \(15^{\circ}\) in time \(t\) sec. The increase in angle through which it rotates in the next \(2 t \mathrm{sec}\) isAP EAMCET 2014 Medium
- A progressive wave of frequency \(500 \mathrm{~Hz}\) is travelling with a velocity of \(360 \mathrm{~ms}^{-1}\). The distance between the two points, having a phase difference of \(60^{\circ}\) is .............AP EAMCET 2018 Easy