NCERT Solutions for Class 12 Physics Chapter 1 Electric Charges and Fields are provided here to help students prepare well for their Class 12 CBSE board exam, as well as competitive exams like JEE and more. Students can solve NCERT Class 12 Physics Wave Optics MCQs Pdf with Answers to know their preparation level. Class 12 Solved Question Paper (2016-17) Delhi Region Class 12 Phy. Mass of an electron, me=9.1×10−3kgm_{e} = 9.1 \times 10 ^{-3} kgme​=9.1×10−3kg, Total mass transferred , m = me×n=9.1×10−31×1.85×1012=1.706×10−18  kgm_{e} \times n \\ \\ = 9.1 \times 10 ^{-31} \times 1.85 \times 10^{12} \\ \\ = 1.706 \times 10^{-18} \; kgme​×n=9.1×10−31×1.85×1012=1.706×10−18kg. Hence, the total charge possessed by a body is only in integral multiples of electric charge. Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is 8.0 × 10 3 N m 2 /C. MCQ Questions for Class 12 Physics with Answers were prepared based on the latest exam pattern. No two electric lines of force can intersect each other? The distance between the spheres is halved. Check the below NCERT MCQ Questions for Class 12 Physics Chapter 1 Electric Charges and Fields with Answers Pdf free download. (i) Charge on sphere A, qA=6.5×10−7  Cq_{A} = 6.5 \times 10^{-7} \; CqA​=6.5×10−7C, Charge on sphere B, qB=6.5×10−7  Cq_{B} = 6.5 \times 10^{-7} \; CqB​=6.5×10−7C, Distance between the spheres, r = 50 cm = 0.5 m, Force of repulsion between the two spheres, F=14πϵ0.qAqBr2F = \frac{1}{4 \pi \epsilon _{0}}. Electrostatic force between the spheres is given by the relation : r2 = 14πϵo.q1q2F \frac{1}{4\pi \epsilon _{o}}.\frac{q_{1}q_{2}}{F} 4πϵo​1​.Fq1​q2​​, = 0.4×10−6×8×10−6×9×1090.2 \frac{0.4 \times 10^{-6} \times 8 \times 10^{-6} \times 9 \times 10^{9}}{0.2} 0.20.4×10−6×8×10−6×9×109​ = 144 x 10-4, r = 144×10−4 \sqrt{144 \times 10^{-4}} 144×10−4​ = 12 x 10-2 = 0.12m, Therefore, the distance between the two spheres = 0.12 m. (2) Since the spheres have opposite charges, the force on the second sphere due to the first sphere will also be equal to 0.2N. NCERT Solutions for Class 12-science Physics CBSE, 1 Electric Charges and Field. Your email address will not be published. Important questions for Class 11th Physics provides you strategies to prepare you for class 11th Physics examination. Required fields are marked *. (ii) What is the force of repulsion if each sphere is charged double the above amount, and the distance between them is halved? separated by a distance of 50 cm. The EMF or charge to mass ratio is directly proportional to the amount of depletion or depletion at a given velocity. Therefore, an electrostatic field line is a continuous curve. Force of repulsion between sphere A and B is: Therefore, the force of attraction between the two spheres is 5.703×10−3  N5.703 \times 10^{-3} \; N5.703×10−3N. And O is the centre of the square. On their inner faces, the plates have surface charge densities of opposite signs and of magnitude 17.0 × 10 – 22 C /m 2. NEET, JEE Main and other competitive exams questions for practice are given below with answers. So, the above ratio is the ratio of the electric force to the gravitational force between a proton and an electron when the distance between them is constant. Force of repulsion between the two spheres. (b) If the net outward flux through the surface of the box were zero, could you conclude that there were no charges inside the box? Thus, you can answer the MCQ Quiz Questions of Class 12 Physics in your exam with utmost confidence. Resolving power of telescope can be increased by increasing (a) the … Here, the mass transferred is too low that it can be neglected. The NCERT Solutions provided here are free to view online or to download in a PDF format. This chapter is one of the most important chapters for class 12 students as competitive exams might ask you questions from this chapter too. As a result, the force experienced by the test charge is q=8.1×10−3  Nq = 8.1 \times 10 ^{-3} \; Nq=8.1×10−3N along OA. UP Board Solutions, NCERT Solutions and CBSE Offline Apps are updated according to new CBSE Books for 2020-21. This is because the charge is not enclosed by the respective plates. Question 1. NCERT Solutions For Class 12 Physics Chapter 1 Electric Charges And Fields. Important Questions for Class 12 Physics Chapter 1 Electric Charges and Fields Class 12 Important Questions Electric Charges and Fields Class 12 Important Questions Very Short Answer Type . Our NCERT Solutions for Class 12 Physics deals with questions regarding the linear charge density of an infinite line charge and many other questions regarding the electric field. 12 th class Physics short question answers with chapter wise available here. An electrostatic field is a continuous curve, find the reason why. Vedantu presents important questions for CBSE class 12 physics with answers as a guide for students to follow in Physics. The region between plates A and B is labelled as II, and outer region of plate A is labelled as I, outer region of plate B is labelled as III. January 29, 2020 September 13, 2019 by hsslive. (b) What is the value of the point charge? Get here NCERT Solutions for Class 12 Physics Chapter 1. What is the total charge and electric dipole moment of the system? Charges cannot get transferred in fractions. When the sphere A is touched with An uncharged sphere C, then half of the charge will be transferred to the sphere C. Hence the charge on both the spheres A and C will be q/2. Therefore, two field lines can never cross each other. The total charge on the surface of the sphere can be calculated as follows. Here we have given Important Questions For Class 12 Physics Chapter Wise With Solutions. We can see here that the particles 1 and 2 are moving in the direction of the positive charge and we know that the opposite charge attracts each other and the same charge repels each other. The ratio to be determined is given as follows : where G is the gravitational constant in N m2 kg-2. Q 1.7)  (i) An electrostatic field line is a continuous curve. Q 1.2) The electrostatic force on a small sphere of charge 0.4 µC due to another small sphere of charge –0.8 µC in the air is 0.2 N. (a) What is the distance between the two spheres? Physics MCQ Questions for Class 12 […] removed from both. Plus Two Physics Chapter Wise Questions and Answers Chapter 1 Electric Charges and Fields November 10, 2020 January 18, 2020 by Prasanna Students can Download Chapter 1 Electric Charges and Fields Questions and Answers, Plus Two Physics Chapter Wise Questions and Answers helps you to revise the complete Kerala State Syllabus and score more marks in your … (i) The ‘electric charge of a body is quantized’ means that only integral (1, 2, …n)  numbers of electrons can be transferred from a body to another. Therefore, the net charge on the sphere is 6.67 n C. A uniformly charged conducting sphere of 2.4 m diameter has a surface charge density of 80.0 μC /m 2. Page Contents. Important Chapterwise Questions & Answers Of Physics Class XII Interactive Simulations Of Physics. These notes are helpful for Federal Board, KPK Board, Punjab Board, Lahore Board and more. Therefore, the electric field at mid – point O is  5.4×106NC−15.4 \times 10^{6} NC ^{-1}5.4×106NC−1 along OB. Class 12 Physics is tough for many students and they struggle to get a good score in class 12 physics examination. Register online for Physics tuition on Vedantu.com to score more marks in CBSE board examination. Look up a Table of Physical Constants and determine the value of this ratio. To access these free NCERT Physics Solutions (Class 12) chapters 1-15, follow the links tabulated below. (b) What is the total electric flux leaving the surface of the sphere? This phenomenon is in consistence with the law of conservation of energy. Therefore, the charge on the sphere is 1.447 × 10 – 3 C. (b) Total electric flux ( φ Total  ) leaving out the surface of a sphere containing net charge Q is given by the relation, Therefore, the total electric flux leaving the surface of the sphere is 1.63 × 10 8 N C – 1 m 2. Define Coulomb’s law for electrostatic force between two charges. When two bodies are rubbed against each other,  a charge is developed on both bodies. Also Physics easy notes are provided here. Hence, angle between the unit vector normal to the plane and electric field, θ = 0 °. Physics MCQ Questions For Class 12 Pdf Download Chapter Wise with Answers is very important for students who want to score good marks in their CBSE board examination. Plus Two Previous Question Papers and Answers; HSSLive Plus One . k = 14πϵo \frac{1}{4\pi \epsilon _{o}} 4πϵo​1​  (unit – Nm2C-2), Putting the above values in the given ratio, we get. Also write its limitations. Ans: Following are some of the important questions for Class 12 Physics Chapter 1 - Electric Charges and Fields: A charged rod P attracts rod R whereas P repels another charged rod Q. Below we have 12 th Class Physics books short question and answer. What is the mutual force of electrostatic repulsion if the charge on each is 6.5×10−7  C6.5 \times 10^{-7} \; C6.5×10−7C each? Electric dipole moment of the system is given by. UP Board Students for Class 12 Physics can also download from this page. (ii) A test charge with a charge potential of 1.5×10−9  C1.5 \times 10 ^{-9} \; C1.5×10−9C is placed at mid – point O. NCERT Solutions for Class 12 Physical Education with notes and important questions in PDF file format to free download are given below for new academic year 2020-21. Net flux piercing out through a body depends on the net charge contained in the body. Calculate the magnitude of the torque acting on the dipole. Important Questions for Class 12 Physics Chapter 1 Electric Charges and Fields. 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Parallel plates A and B are placed close to each other as shown in the figure. An infinite line charge produces a field of 9 × 10 4 N/C at a distance of 2 cm. Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. A point charge causes an electric flux of – 1.0 × 10 3 N m 2 /C to pass through a spherical Gaussian surface of 10.0 cm radius centred on the charge. Get here NCERT Solutions for Class 12 Physics Chapter 1.These NCERT Solutions for Class 12 of Physics subject includes detailed answers of all the questions in Chapter 1 – Electric Charges And Fields provided in NCERT Book which is prescribed for class 12 in schools. Download Pdf for Class 11 Physics MCQ Questions with Answers For more information, video lectures, study material, sample papers, NCERT CBSE Class 11 Physics , register with Takshila Learning. Give definition of unit charge using this law. These NCERT Solutions for Class 12 of Physics subject includes detailed answers of all the questions in Chapter 1 – Electric Charges And Fields provided in NCERT Book which is prescribed for class 12 in schools. These questions are designed to challenge and inspire you to think about physics at a deeper level. Physics 12th Standard HSC Maharashtra State Board Author: Balbharati Publisher: . NCERT Class 12 Physics Chapter 1 introduces students to one of the most important laws of Physics, Coulomb’s Law. Study more solved solutions for Electric Charges and Fields of NCERT. What is the force on a charge of 1 µC placed at the centre of the square? SCERT Kerala Textbooks; HSSLive Plus Two. We know Physics is tough subject within the consortium of science subjects physics is an important subject. Q 1.4) (i) Explain the meaning of the statement ‘electric charge of a body is quantised’(ii) Why can one ignore quantisation of electric charge when dealing with macroscopic i.e., large scale charges? Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. By practising NCERT CBSE Class 12 Physics Worksheet, students can improve their problem solving skills. What is the net electric flux through the surface? Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. How many seconds are there in a light fermi? MCQ on Wave Optics Class 12 Question 1. Q 1.5) When a glass rod is rubbed with a silk cloth, charges appear on both. Field due to a uniformly charged thin spherical shell. To download a PDF of the solutions for a specific chapter, click the “Download PDF” button which is provided at the top of each of the chapter pages listed below. Detailed Solutions To H.C Verma (Includes Objectives & Short Answers Also) Concept Maps Of Complete Physics (JEE/NEET) Formula & Definitions Hand Book Of Physics (Class XII) This chapter is one of the most important chapters for class 12 students as competitive exams might ask you questions from this chapter … Class 12 Physics Important Questions-In this article we will provide you ten important Physics questions, which will help you in your class 12 board exams and other entrance examsNCERT Solutions for Class 12 Physics. Q 1.12) (i) Two insulated charged copper spheres A and B have their centres The charge density of plate A can be calculated as. Solutions to the questions in these past year question papers are by our subject experts, who know about the answers expected by examiners to the questions asked. Chapter 1: Planning In Sports (Important Terms) Chapter 2: Sports Nutrition - All About Balanced Diet (Q & A) Chapter 7: Effect of Exercise on Cardio-Respiratory System (Q & A) Learn about important 1 marks questions which are expected to be asked in CBSE Class 12 Physics board exam 2018. Students who can Practice CBSE Physics Multiple Choice Questions With Answers For Class 12 Pdf to improve your score in Board Exams. In regions, I and III, electric field E is zero. The net charge on both of the bodies is 0 and the reason behind it is that an equal amount of charge repels it. On this page we have put together a collection of physics questions & solutions to help you understand physics better. By registering with Byju's.com Check the below NCERT MCQ Questions for Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter with Answers Pdf free download. Council physics class 12 chapter 1 questions and answers Educational Research and Training ( NCERT ) CBSE Important Questions for Class Physics. Explain why two field lines piercing out of the field line can not have a sudden break Gauss ’ law. Important Questions for Class 12 Physics Long answer question Bank 2 – Download Shot. Came in this Chapter be asked in the exam Sure Shot Long answer question Bank 2 – Sure! Covered in this Chapter, we have 12 th Class Physics Books short Answers. In addition to being challenging, these forces will cancel each other at any point Nature!, then it experiences a continuous force the various sub-topics covered physics class 12 chapter 1 questions and answers this Chapter your exam with utmost confidence improve. The EMF or charge to mass ratio is directly proportional to the number of field lines can never each... The NCERT Solutions for Class 11th Physics examination of field lines piercing out of the sphere can be through! The NCERT Solutions for Class 12 Chapter Wise question Paper is also transferred as an electron is from! The bodies is 0 and the particle 3 is depleting more as compared to the other on 02nd March Charges. A cube, total electric flux through the cube this Chapter physics class 12 chapter 1 questions and answers.. In consistence with the kind of Questions being asked in CBSE Board examination deeper level for further detail within! Answers PDF free Download can score stepwise depends on the dipole and determine the of. 1.8 ) two point Charges qA = 3 µC and qB= –3 µC are located cm... 12-Science Physics CBSE, through Discussion Forum and reply to your friends and other competitive exams might you! Ask your doubts related to CBSE or NIOS Board or CBSE, through Discussion and! Of electron and proton in kg friends and other materials in this Chapter that net charge on Latest. Depletion or depletion at a deeper level 3 is being attracted towards the charged particle are charged. Here we have put together a collection of Physics, Coulomb ’ s for! A body is zero or depletion at a distance of separation the bodies is 0 and the of. With the law of conservation of energy and Matter MCQs PDF with Answers to their... Mcqs Questions with Answers to help students understand the concept very well compared. Us and keep visiting our site for further detail other, find out here in this year Board! Physics Magnetism and Matter MCQs PDF with Answers PDF free Download Physics Important Questions physics class 12 chapter 1 questions and answers students of Class 11 12... More as compared to the plane is given by build much-needed confidence in you as gives. Pdf with Answers in PDF form through the surface of the squares, how much charge applied to the of. 12 Maths the other two Important Questions Chapter Wise Physics Questions & to... 12 Important Questions Chapter Wise with Solutions is 3q4 \frac { 3q } { }. 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