To download Alternating Current class 12 Notes, sample paper for class 12 Physics, Chemistry, Biology, History, Political Science, Economics, Geography, Computer Science, Home Science, Accountancy, Business Studies and Home Science; do check myCBSEguide app or website. To assist you with that, we are here with notes. Who is this Amit Kumar? Free PDF Download of CBSE Physics Multiple Choice Questions for Class 12 with Answers Chapter 7 Alternating Current. `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. Answer by all are informative, and I wish to add another angle and significance of Quality factor. }, .btn { Higher Q indicates a lower rate of energy loss relative to the stored energy of the oscillator; the oscillations die out more … 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. This is the underlying principle of a moving coil galvanometer. Students can solve NCERT Class 12 Physics Alternating Current MCQs Pdf with Answers to know their preparation level. Students can solve NCERT Class 12 Physics Alternating Current MCQs Pdf with Answers to know their preparation level. There is a disconnect between definitions of the factor ‘quality’ by academics and how it is defined by many in the asset management industry. 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. Article writing for class 12 carries 10 marks, it is a very important question. (ii) Peak (I m or V m):- It is the maximum available … 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. Calculate the emf and internal resistance of the equivalent cell. 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 =. Is the radius if a lens not the double of its focal length..? Quality factor is expressed as, Q-factor is a dimensionless quantity. This is possible only when you have the best CBSE Class 12 Chemistry Notes, study material, and a smart preparation plan. Why are microwaves considered suitable for radar systems used in aircraft navigation? Class-12-science » Physics. In this part we will study various concepts related to transformer, efficiency of Transformer etc Students can solve NCERT Class 12 Physics Alternating Current MCQs Pdf with Answers to know their preparation level. What is the distance of closest approach when a 5.0 MeV proton approaches a gold nucleus ?? What is quality factor Report ; Posted by Vikas Pandey 2 years, 9 months ago. Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Quality factor is expressed as, Q-factor is a dimensionless quantity. ii) EMF induced is, e = - M . Business Studies class 12 notes are prepared by the subject experts who have experience of over 20+ years and sound knowledge of the latest CBSE syllabus as well as the Class 12 board exam pattern. Extensibility is the ability of software to add functionality without damaging system, so it may be thought of as a subset of flexibility. 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.. There can be more than one community in a society. Class XII Physics (042) Sample Question Paper 2018-19 Time allowed: 3 hours. Panigatti 2 days, 12 hours ago, Posted by Sumit Nagoriya 2 days, 6 hours ago, Posted by Rahul Kumar Kannaujiya 6 hours ago, .btn { text-transform: none; The Q factor of the pMUT can be determined by the real part of the impedance frequency spectrum, which is defined as Q = f r /Δf, where the resonance frequency f r is the frequency at which the real part of the impedance reaches its maximum, Δf is the width of the peak at its half height, so-called 3 dB bandwidth. Assuming resonance, 100mH. Maximum marks: 80. Related - Informal … 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? It is defined as the peak energy stored in the circuit divided by the average energy dissipated in it per radian at resonance. 2. Radius of the circular path in which the charged particle is moving is given by,  Since the neutron has no charge, it will move along a straight line. What is its SI unit? The ratio`(omega_0L)/R`is called the quality factor or Q-factor. Q (quality factor)는 총 에너지 손실 합에 대한 캐패시터나 인덕터같은 리액티브 소자에 축적된 에너지의 비이다. 0 × 1 0 4 times. 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. Reply. Is the potentialdifference VA – VB is positive, negative or zero? The … text-transform: none; 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… Get a free home demo of LearnNext. What is Q factor? The electron will follow a circular path which has a radius smaller than that of the alpha particle. This can be simply expressed as a perfect inductor with a series resistor. The quality factor depends on the values of the following: Inductance. Q factor is alternatively defined as the ratio of a resonator's centre frequency to its bandwidth when subject to an oscillating … Quality factor is expressed as, Q-factor is a dimensionless quantity. The ratio`(omega_0L)/R`is called the quality factor or Q-factor. NCERT Solutions class 12 physics Alternating Current Class 12 Physics solutions are available in PDF format for free download. Quality factor and its relevance with selectivity - definition The Q factor is a widespread measure used to characterize resonators. Reply. All questions are compulsory. Resistance. Free PDF Download of CBSE Physics Multiple Choice Questions for Class 12 with Answers Chapter 7 Alternating Current. In brief. 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. Why is it so? This helps the business to earn more profit. Physics MCQ Questions for Class 12 Pdf Question 14. 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. ... CBSE Class 12 Physics Solved Question Paper 2016. how does the field change,when this core is replaced by a core of Bismuth??? Explore Chemistry Investigatory Projects Experiments Class 12 CBSE, Chemistry Projects, Organic Science Fair Projects, Expo Models, Exhibition Topics, Expo Ideas, CBSE Science Experiments Project Ideas Topics, winning chemistry project ideas, cool and fun interesting chemistry project experiments, investigatory project for Kids and also for Middle school, Elementary School for class 5th … font-size: 14px; clear. Quality factor is expressed as, Q-factor is a dimensionless quantity. Share with your friends. 14. Posted on September 12th 2020 | 8:32 pm. i) Mutual Induction: It is the phenomenon in which a change of current in one coil induces an emf in another coil places near it. The length of the vector represents the maximum or peak value. Hence, show that for points at large distance from the ring, it behaves like a point charge. Get a free home demo of LearnNext. 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