TS EAMCET · Physics · Semiconductors
The power gain and voltage gain of a transistor connected in common emitter configuration are 1800 and 60 respectively. If the change in the emitter current is 0.62 mA, then the change in the collector current is
- A 0.60 mA
- B 0.58 mA
- C 0.52 mA
- D 0.48 mA
Answer & Solution
Correct Answer
(A) 0.60 mA
Step-by-step Solution
Detailed explanation
\( \beta = \frac{A_p}{A_v} = \frac{1800}{60} = 30 \) \( \Delta I_c = \frac{\beta}{1+\beta} \Delta I_e = \frac{30}{1+30} \times 0.62 \text{ mA} = 0.60 \text{ mA} \)
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
- An ant starts from the origin and crawls along the -axis and then along the -axis. The dot product of the ant's displacement vector with the position vector of a point that makes with the -axis and has a magnitude of isTS EAMCET 2022 Medium
- The surface tension of 70 dynes \(/ \mathrm{cm}\) is equal toTS EAMCET 2020 Easy
- Two slabs \(A\) and \(B\) of equal surface area are placed one over the other such that their surfaces are completely in contact. The thickness of slab \(A\) is twice that of \(B\). The coefficient of thermal conductivity of slab \(A\) is twice that of \(B\). The first surface of slab \(A\) is maintained at \(100^{\circ} \mathrm{C}\), while the second surface of slab \(B\) is maintained at \(25^{\circ} \mathrm{C}\). The temperature at the contact of their surfaces isTS EAMCET 2008 Hard
- A sound wave passing through an ideal gas at NTP produces a pressure change of 0.001 dyne \(/ \mathrm{cm}^2\) during adiabatic compression. The corresponding change in temperature \((\gamma=1.5\) for the gas and atmospheric pressure is \(1.013 \times 10^6\) dyne \(/ \mathrm{cm}^2\) ) isTS EAMCET 2012 Hard
- Let \(m\) and \(r\) are the dipole moment and radius of earth respectively. Then, the earth's magnetic field at the equator isTS EAMCET 2020 Easy
- Three identical vessels are filled up to the same height with three different liquids \(A, B\) and \(C\) of densities \(\rho_{\mathrm{A}^{\prime}} \rho_{\mathrm{B}}\) and \(\rho_{\mathrm{C}}\), then the pressure at the bottom of the vessels isTS EAMCET 2024 Easy
More PYQs from TS EAMCET
- A body is oscillating in simple harmonic motion according to the equation \(x=6 \cos \left(2 \pi t+\frac{\pi}{3}\right) \mathrm{m}\). The magnitude of the acceleration (in \(\mathrm{m} / \mathrm{s}^2\) ) of the body at \(t=1 \mathrm{~s}\)TS EAMCET 2020 Easy
- Moon revolves around the earth in an orbit of radius \(\mathrm{R}\) with time period of revolution \(\mathrm{T}\). It also rotates about its own axis with a time period \(\mathrm{T}\). If mass of the moon is \(\mathrm{M}\) and its radius is ' \(r\) ', the total kinetic energy of the moon isTS EAMCET 2023 Medium
- When a photosensitive material is illuminated by photons of energy 3.1 eV, the stopping potential of the photoelectrons is 1.7 V. When the same photosensitive material is illuminated by photons of energy 2.5 eV, the stopping potential of the photoelectrons isTS EAMCET 2025 Medium
- A source of frequency \(340 \mathrm{~Hz}\) is kept above a vertical cylindrical tube closed at lower end. The length of the tube is \(120 \mathrm{~cm}\). Water is slowly powred in just enough to produce resonance. Then, the minimum height (velocity of sownd \(=340 \mathrm{~m} / \mathrm{s}\) ) of the water level in the tube for that resonance isTS EAMCET 2016 Medium
- Two rods of same area of cross-section have lengths \(L\) and \(2 \mathrm{~L}\) and coefficients of linear expansions \(2 \alpha\) and \(\alpha\) respectively. If they are welded to form a composite rod of length \(3 \mathrm{~L}\) then the coefficient of linear expansion of the composite rod isTS EAMCET 2023 Medium
- A body is projected at an angle \(\theta\) so that its range is maximum. If \(T\) is the time of flight, then the value of maximum range is (acceleration due to gravity \(=g\) )TS EAMCET 2014 Medium