C c 3 108 m s -1 h 6.6 1034 J s o 4 107 T ma -1 K B 1.38 1023 J K -1 N A 6.023 1023 /mole mn 1.6 1027 kg Q1. Define the electric dipole moment. What is the direction of this vector? (1) Q2. What is the SI unit of electric flux and electric field? (1) Q3. The number of turns in the secondary of a transformer is 100 times the number of turns in the primary. If 1kW of power is supplied to the primary‚ how much power is obtained at the secondary? (1) Q4. Arrange these in decreasing
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The Rutherford Model of the Atom 1. In 1911 Rutherford proposed the nuclear model of atomic structure. He suggested that an atom consists of a central nucleus (where most of the mass of the atom is concentrated) having a positive charge‚ surrounded by moving electrons carrying negative charge. Geiger and Marsden carried out an experiment to verify his proposal. The Geiger/Marsden a Particle Scattering Experiment 1. The apparatus is illustrated in the diagram below. | 2. The apparatus
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Electrical technology – assignment 4 Properties of electrical materials and Effective use of technology P.5. Describe the properties and a typical application of a solid and a liquid or gas electrical conductor. A conductor is a material that allows free movement of electrons and therefore allows easy flow of electricity. Most conductors are metals. A common metal used as a conductor in electrical technology is aluminium. It is used quite a lot as it cheap‚ lightweight and in abundance compared
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The basic EFPA uses a voltage source and a combination of circuitry to accelerate an object to a desired speed. This is what makes EFPA a fairly unique device. An Electromotive Force Projectile Accelerator demonstrates many of basic concepts of magnetic machines. An EFPA is an example of an electromagnetic coil/solenoid. Such appear practically everywhere‚ from car door locks to doorbells and from diskette drive ejectors to fuel injectors. The only difference is that most solenoids limit the range
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Basic Engineering-II The objective of this subject will help us to know the basic knowledge of Electronics. The concept of semiconductors‚ transistors‚ diodes‚ FET‚ MOSFET their working principles‚ construction and working model. To know about the a.c to dc converting circuits like half wave‚ full wave rectifiers circuits. Also the filter operation of ripples using various types of filter circuits. The various types of transducer working‚ construction and uses will be discussed briefly and moving
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Research Activity Constructivism and Student Misconceptions: Why Every Teacher Needs to Know About Them The article I chose to do this research activity on was "Constructivism and Student Misconceptions: Why Every Teacher Needs to Know About Them" by Audrey Sewell (Appendix A). I believe this article addresses a key idea that all teachers should be aware of‚ student misconceptions. For this paper I will start by summarizing the key ideas‚ then I will go on to discuss how they relate to the
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One thing that uses magnetic fields is the electric motor‚ which is used in many household appliances‚ such as electric fans‚ microwave ovens‚ and other small appliances. In this instance the electric motor has an electric current‚ giving it also this magnetic field. An electric motor converts electricity into mechanical motion. Most electric motors work by electromagnetism‚ but motors based on electrostatic forces also exist. The overarching concept is that a force is generated when a current-carrying
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answer questions 10× 2 = 20 M Answer all questions‚ each carries two marks. (1) What are beats? (2)Can there be electric intensity at a point with zero electric potential? Give example. (3) define resistivity (or) Specific resistance. (4)Magnetic lines form continuous closed loops. Why? (5)State Lenz’s law. (6)What is transformer ratio? (7)Give two uses of infrared rays. (8) What is work function? (9) Draw the circuit symbol for p – n – p and n - p – n transistors. (10) Define modulation
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of Electromagnetic induction [1](“Faraday’s Law‚ discovered in 1831 by Michael Faraday‚ states that the induced electromotive force in a closed circuit is equal to the time rate of change of the magnetic flux through the circuit. Under Faraday’s Law‚ electric current is induced only if either the magnetic field is changing or the conductor is moving. Generators‚ for example‚ spin a coil of wire around a magnet to produce a steady current” [3]) did electricity become viable for use in technology. Since
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Class XI‚ Published by NCERT 2. Physics Part-II‚ Textbook for Class XI‚ Published by NCERT Class XII (Theory) One Paper Unit I Unit II Unit III Unit IV Unit V Unit VI Unit VII Unit VIII Unit IX Unit X Time: 3 Hours Electrostatics Current Electricity Magnetic effect of current & Magnetism Electromagnetic Induction and Alternating current Electromagnetic Waves Optics Dual Nature of Matter Atoms and Nuclei Electronic Devices Communication Systems Total Total Periods : 180 70 Marks 08 07 08 08 03 14 04 06
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