Mention the significance of quality factor in L-C-R circuit. As the charge is distributed uniformly over the ring, the charge density over the ring is, https://www.zigya.com/previous-year-papers/cbse/12/Physics/2016/CBSE2016003. Extensibility is the ability of software to add functionality without damaging system, so it may be thought of as a subset of flexibility. Available for CBSE, ICSE and State Board syllabus. Free PDF Download of CBSE Physics Multiple Choice Questions for Class 12 with Answers Chapter 7 Alternating Current. Zuko. Two cells of emfs 1.5 V and 2.0 V,  having internal resistances 0.2 Ω and 0.3 Ω, respectively, are connected in parallel. where A is the transmission amplitude parameter and Q is the quality factor, which is related to the full width at half maximum by Δ FWHM = f 0 /Q.The total quality factor Q is a figure of merit for the sharpness of the resonance and thus the magnitude of the losses. Passage 1: Read the given passage carefully. The entire NCERT textbook questions have been solved by best teachers for you. This is possible only when you have the best CBSE Class 12 Chemistry Notes, study material, and a smart preparation plan. What is Q factor? prasanna December 9, 2016, 1:19am In a series RLC circuit, the quality factor (Q) measures sharpness of resonance. Quality factor relates the maximum or peak energy stored in the circuit (the reactance) to the energy dissipated (the resistance) during each cycle of oscillation. Reply. Article writing for class 12 carries 10 marks, it is a very important question. CBSE > Class 12 > Physics 1 answers What is the net flux of the uniform Electric field= 3 × 10³ N/C through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes? Alternating Current ... *In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how under-damped an oscillator or resonator is, or equivalently, characterizes a resonator's bandwidth relative to its center frequency. Class 12 Chemistry Solutions – Get here the Notes for Class 12 Solutions. 2. Power Factor of an alternating current circuit is the ratio of true power dissipation to the apparent power dissipation in the circuit. Factors affecting seed quality Seed quality is determined by a number of genetic and physiological characteristics. Quality factor is expressed as, Q-factor is a dimensionless quantity. It is defined as the ratio of voltage across L or C to the applied voltage.. Q-factor = Voltage across LorC / Applied voltage 1.Phasor The representation of AC current and voltage by rotating vectors is calle^ phasor and the diagram representing these phasors is known as phasor diagram. Answer by all are informative, and I wish to add another angle and significance of Quality factor. are listed, what is the criteria to select these factors. Preparations of finished products are also better. Higher Q indicates a lower rate of energy loss relative to the stored energy of the oscillator; the oscillations die out more … Microwaves are considered suitable for radar systems used in aircraft navigation because they have a short wavelength range (10, A charge is distributed uniformly over a ring of radius 'a', . ... CBSE Class 12 Physics Solved Question Paper 2016. Those functionality changes may occur according to changing requirements, or an obligation if the development process is one of the iterative methods. 2 min its total mechanical energy decreases η = 4. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Hence, show that for points at large distance from the ring, it behaves like a point charge. Aisha Grewal 2 years, 9 months ago. This can be simply expressed as a perfect inductor with a series resistor. Class-12-science » Physics. These best practices are designed to enable applications to be built with portability and resilience when deployed to the web. To find: electric field due to a ring at a point P lying at a distance x from its centre along the central axis perpendicular to the plane of the ring. The instantaneous current and voltage of an a.c. circuit are given by i = 10 sin 300 t A and V = 200 sin 300 t V. What is the power dissipation in the circuit? The Q factor of an RF resonant circuit is given as: \(Q=\frac{F_{0}}{F_{3dB}}\) 15. Delhi - 110058. Quality factor is expressed as, Q-factor is a dimensionless quantity. Maximum marks: 80. Reply. The Q factor determines the qualitative behavior of simple damped oscillators. 12. The length of the vector represents the maximum or peak value. how does the field change,when this core is replaced by a core of Bismuth??? It is defined as the peak energy stored in the circuit divided by the average energy dissipated in it per radian at resonance. Compute the magnetic dipole moment of the loop shown in figure, What is LCR circuit in AC current please explain. Flexibility is the ability of software to add/modify/remove functionality without damaging the current system. }, .btn { Class-12-science » Physics. Quality factor is expressed as, Q-factor is a dimensionless quantity. Quality Factor. Get CBSE class 12 Physics notes on Alternating Current Part 3. Get a free home demo of LearnNext. Learner's Section arrow_drop_down. A point charge +Q is placed at point O as shown in the figure. Max. } (b) Quality factor is measure of sharpness of resonance, is equal to \(\frac{\omega L}{R}\). It is defined as the peak energy stored in the circuit divided by the average energy dissipated in it per radian at resonance. The ratio`(omega_0L)/R`is called the quality factor or Q-factor. Handling in post-harvest operation will be easy. CBSE > Class 12 > Physics 3 answers; Anjali Sharma 2 years, 9 months ago. Can anyone provide me with the blueprint of the question paper of phy? Class 12 Physics chapter wise NCERT solution for Physics … For e.g. An ideal inductor is one with zero resistance . Alternating Current Class 12 Physics MCQs Pdf. Low Q circuits are therefore damped and lossy and high Q circuits are under-damped. Resistance. Electric potential at a distance r from the point charge +Q is given by,   Potential at point A is,  Similarly, potential at point B is given by, Since rA < rB, 232, Block C-3, Janakpuri, New Delhi, Quality factor of the LCR circuit If reading of voltmeter V shown in the figure at resonance is 200V , find the quality factor of the circuit :- how_to_reg Follow Due to the presence of magnetic field, the charged particle will move in a circular path. In order to write a perfect article, we must be well acquainted with the topic and must possess a wide range of vocabulary, a thorough knowledge of the subject, some research, and excellent organizational skills. Share with your friends. Quality factor or Q–factor. CBSE Class 12 English Comprehension Passages – Practice Test-1. This is because the force is perpendicular to the velocity of the charged particle. What is its SI unit? Complete Class 12 | Physics | Chapter Wise Derivation List | EduRev Notes chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check out Class 12 lecture & lessons summary in the same course for Class 12 Syllabus. When a current-carrying coil is placed in a magnetic field, it experiences torque. 14. The Twelve-Factor App methodology is a methodology for building software-as-a-service applications. Capacitance Therefore, the electron will move in the clockwise direction and the electron will move in the anticlockwise direction as per the Right Hand Rule. Wayne Storr … Calculate the quality factor of a series L- C- R circuit with L= 2.0 H ,C = 2 pF and R = 10 £2. 0 Thank You. Assuming resonance, 100mH. Meaning of Goodwill Goodwill means the good name or reputation of a business earned by a businessman through his hard work and honesty. EduRev is like a wikipedia just for education and the Class 12 | Physics | Chapter Wise Derivation List | EduRev Notes images and … This is because the mass to charge ratio of the alpha particle is more than that of the electron. Hope these notes will … Why are microwaves considered suitable for radar systems used in aircraft navigation? Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Simply apply as teacher, take eligibility test and start working with us. Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. NOTES ON ‘ALTERNATING CURRENT’ (Class 12) Page 01 Alternating current (A.C) is the current that changes in magnitude direction continuously with respect to time. `Q = (omega_0L)/R` The quality factor has high value in receiving circuits in order to get a sharp gain for the desired channel frequency. Class-12-science » Physics. This question paper has four sections: Section A, Section B, Section C and Section D. 3. The following data may help you for Working projects as well as written journals and assignments for EVS in Class 12th CBSE. 2021 Zigya Technology Labs Pvt. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT … The main factor that has affected the quality of education is the fact of governments hiring under-qualified teachers on contract, paying them a pittance of a salary. Class 12 Physics Alternating Currents – Get here the Notes for Class 12 Physics Alternating Currents. ii) A pair of adjacent coils has a mutual inductance of 1.5 H. If the current in one coil changes 20 A in 0.5 s, what is the change of flux linkage with the other coil? Free PDF Download - Best collection of CBSE topper Notes, Important Questions, Sample papers and NCERT Solutions for CBSE Class 12 Business Studies Marketing Management. This is the underlying principle of a moving coil galvanometer. Is the radius if a lens not the double of its focal length..? Calculate the emf and internal resistance of the equivalent cell. Meanwhile, the board has uploaded the sample papers on its official website, the link for which is cbse.nic.in . © What is the distance of closest approach when a 5.0 MeV proton approaches a gold nucleus ?? i) Define mutual Inductance. Quality factor of the LCR circuit X. This could lead to confusion by investors who want to follow Quality along with the three other common factors used in … When using an inductor in a circuit where the Q or quality factor is important its resistance becomes an important factor. Download the PDF Sample Papers Free for off line practice and view the Solutions online. Get a free home demo of LearnNext. CBSE Class 12 Economics Sample Paper 2020: The Central Board of Secondary Education (CBSE) will release the datesheet of the Class 10 and Class 12 Board Exams 2020 soon. Free PDF Download of CBSE Physics Multiple Choice Questions for Class 12 with Answers Chapter 7 Alternating Current. Find the quality factor of a mathematical pendulum l = 5 0 c m long if during the time interval τ = 5. Inductor Q factor basics. Marks: 70 General Instructions: 1. Over the course of his investigations he developed the concept of Q. Interestingly his choice of the letter Q was made because all other letters of the alphabet were taken and not because of the term q… The quality factor depends on the values of the following: Inductance. This is the main reason why we cannot calculate the power for the same, as power is equal to the product of voltage and time. Question 1. Type: Double Blind Peer Reviewed International Research Journal Publisher: Global Journals Inc. (USA) Online ISSN: 2249-4588 & Print ISSN: 0975-5853. Check you answers with answer keys provided. The current in the series RLC circuit becomes maximum at resonance. Download CBSE Class 12 Physics Electromagnetic Induction Alternating Current Frequently Asked Questions pdf, Physics revision notes, mind maps, formulas, examination notes, sure shot questions, CBSE Class 12 Physics Electromagnetic Induction Alternating Current Frequently Asked Questions. This would create inability in learners‟ lives and compromise their overall experience of living socially, culturally and economically. These notes are important for CBSE Class 12 board exam 2017 ... Sharpness of Resonance: Quality Factor. View solution In the L C R circuit shown in Fig., the ac driving voltage is V = V m sin ω t . Alternating Current ... *In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how under-damped an oscillator or resonator is, or equivalently, characterizes a resonator's bandwidth relative to its center frequency. Share with your friends. Class-12-science » Physics. The … The quality factor or Q-factor of a series resonant circuit is defined as the ratio of a voltage developed across the inductance or Capacitance at resonance to the impressed voltage, which is the voltage applied across R. It includes every relationship which established among the people. NCERT Solutions class 12 physics Alternating Current Class 12 Physics solutions are available in PDF format for free download. a) Write the expression for the magnetic force acting on a charged particle moving with velocity v in the presence of magnetic field B. b) A neutron, an electron and an alpha particle, moving with equal velocities, enter a uniform magnetic field going into the plane of paper, as shown. 0 × 1 0 4 times. i) Capacitance of a parallel plate capacitor is given by,  ii) Potential difference between plates X and Y can be calculated as,             Q = CV  iii) The ratio of electrostatic energies can be calculated as: Given, EMF, E1 = 1.5 V ; E2 = 2 V Internal resistance, r = 0.2 Effective emf of two cells connected in parallel is, Eeff =   This implies, The effective resistance can be calculated as:Reff = That is, Reff =. (All India 2008) Answer: Question 2. Wayne Storr. The concept of Q, Quality Factor was first envisaged by an engineer named K. S. Johnson from the Engineering Department of the Western Electric Company in the US. Mon to Sat - 10 AM to 7 PM (ii) Peak (I m or V m):- It is the maximum available … Due to the increase in current, the voltage across L and C are also increased.This magnification of voltages at series resonance is termed as Q–factor.. 1.Phasor The representation of AC current and voltage by rotating vectors is calle^ phasor and the diagram representing these phasors is known as phasor diagram. Call our LearnNext Expert on 1800 419 1234 (tollfree) OR submit details below for a call back. The genetic component involves differences between two or more genetic lines, while differences between seed … The coil in which the current changes is called the primary coil and the coil in which the emf is induced is called the secondary coil. clear. Quality factor relates the maximum or peak energy stored in the circuit (the reactance) to the energy dissipated (the resistance) during each cycle of oscillation. 1. Resistance. CBSE Class 12 Physics Solved Question Paper 2016, Class 11 NCERT Political Science Solutions, Class 11 NCERT Business Studies Solutions, Class 12 NCERT Political Science Solutions, Class 12 NCERT Business Studies Solutions, https://www.zigya.com/share/UEhFTjEyMTE1NDE4. Posted by Aadesh Sarkanungo 2 years, 10 months ago, Posted by Tanisha Shrivastava 1 day, 15 hours ago, Posted by Akhil Prajapati 2 days, 7 hours ago, Posted by Kirti Sharma 1 day, 19 hours ago, Posted by Tanmay Sharma 2 days, 15 hours ago, Posted by Madhu.P. Write the underlying principle of a moving coil galvanometer. The mathematical representation is: Q = E stored /E lost per cycle. Why is it so? Call our LearnNext Expert on 1800 419 1234 (tollfree) OR submit details below for a call back Alternating Current Important Questions for CBSE Class 12 Physics AC Currents. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. How does the electric flux due to a point charge enclosed by a spherical Gaussian surface get affected when its radius is increased? Related - Informal … Required desktop or laptop with internet connection, All Content and Intellectual Property is under Copyright Protection | myCBSEguide.com ©2007-2021, Using the multimeter, identity the terminals of transistor. The direction of the force is perpendicular to the plane containing velocity v and magnetic field B. b) A charged particle experiences a force when it enters the magnetic field. what is the definition of quality factor. in ceramic capacitor’s table quality factors such as S, R, P, M etc. A toroidal solenoid of mean radius 20cm has 4000 turns of wire wound on a ferromagnetic core of relative permeability 800 calculate the magnetic field in the core for a current of 3A passing through the coil . For points at large distance from the ring approaches a gold nucleus??????. 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