200 200 200 200 200 L 5 10 20 40 60 80 100 120 150 175 200 This is one of over 2,200 courses on OCW. ! 6.5) the current in the capacitor leads the voltage by 90 ° . Presentation Summary : The convenience and safety of household electricity depend on how the electric circuits in your home are designed. Assume that the resistance of the light bulb is independent of its temperature? 380 views. A series of lessons created to accompany the Activate 2 (Oxford) KS3 module for Electricity and Magnetism. 3) Capacitive load : (Fig. Find materials for this course in the pages linked along the left. Switch. Induced magnetism Yan Yan Agabon. By sanding one half of the wire (and specifically the way we did it) we create this cycle of first magnetic attraction and then momentum to get the coil to spin. The impedance of the resistor R I V z m m == I m , V m : amplitude of i and e, respectively. a) Find the voltage v and the current i. A coil of wire carrying an electric current can create a magnetic field! We have more to learn about Electricity & Magnetism after this quiz… I hope you’re “buzzed” about this! 2.- Magnets attract only some materials called magnetic ones. Lecture 5 Section 7 dwright2. Electricity and Magnetism Magnetism is the force of attraction or repulsion of magnetic materials. Why isn’t this done? • Like poles repel and opposite poles attract. Electricity and Magnetism Module 6 What is electricity? Fig. An object with equal amounts of positive change and negative charge is said to be electrically neutral. 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A switch is a device that can open or close a circuit. At t > 0, the switch K is at 2. P6.3 6.2) Consider the circuit in Fig. Home » PowerPoint Slides » PPT On ELECTRICITY AND MAGNETISM IGCSE Download Free and Get a Copy in your Email x. P6.3 with e(t) = 12sin(120 π t) V, L = 0.0265mH. At t < 0, the switch K is at 1. Welcome! Magnets and Magnetism. When S 1 and S 2 are closed, i has amplitude 0.5A. Welcome! You can also click the … Fig. Xem thêm: PHYSICS 3 (ELECTRICITY AND MAGNETISM) - CHAPTER 6 ppt, PHYSICS 3 (ELECTRICITY AND MAGNETISM) - CHAPTER 6 ppt, PHYSICS 3 (ELECTRICITY AND MAGNETISM) - CHAPTER 6 ppt, Copyright © 2020 123Doc. » 6.6 4) The series RLC circuit (Fig. Send to friends and colleagues. This is one of over 2,200 courses on OCW. Published in: Physics. The power supply is 220 V (rms) at 60 Hz; the light bulb is marked “220 V, 1000W” a) What maximum inductance L is required if the power in the light bulb is to be varied by a factor of five? Electrical Energy Circuits rely on generators. Your use of the MIT OpenCourseWare site and materials is subject to our Creative Commons License and other terms of use. With more than 2,400 courses available, OCW is delivering on the promise of open sharing of knowledge. View elec_mag.ppt from CHEM 101 at North South University. This PowerPoint is designed to use with students to promote scientific discussion of ideas. The collection or flow of electrons in the form of an electric charge What is Electricity and Magnetism – how are they related? 6.1. Below are the previews for the slide in Topic 5 - Electricity and Magnetism. » P6.7 Homeworks 6 H6.1 Consider the circuits in Fig. At t > 0, the switch K is at 2. 6.4 2) Inductive load : (Fig. Topic 5 - Electricity and Magnetism; Slide Preview. This is electromagnetic induction. Fair testing and measuring outcomes are pupils responses (not scientific facts!) 6.2 2) Damped Oscillation Consider the circuit in Fig. Electric charge can either be positive or negative. Please leave feedback. Charges with the same sign repel each other and changes with the opposite sign attract. electricity it would simply move into alignment with the magnet on the desk and stay there! Atoms… Have neutrons, protons, and electrons. Learn more », © 2001–2018 We only see them with the help of very powerful magnifying devices. What is electromagnetic induction? Class 9-Electricity and Magnetism powerpoint • Natural magnets are made from Iron, Nickel, and Cobalt. If so, what maximum resistance is required? Magnets are surrounded by a magnetic field that applies a force ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 542b1a-NjhlN While charges could migrate from one body to another, the total charge remains the same. MIT OpenCourseWare is a free & open publication of material from thousands of MIT courses, covering the entire MIT curriculum.. No enrollment or registration. Find i R (t), i L (t), i C (t), V(t), the storage energy of the capacitor, the storage energy of the inductor, and the total storage energy (R in Ω , L in mH, C in µ F). 6.4) Consider the circuits in Fig. Ch05 lschmidt1170. The motion of a charge is affected by its interaction with the electric field and, for a moving charge, the magnetic field. P6.6 where R = 100 Ω , C = 10 µ F, e = 100sin(1000t) volts. Moving a loop of wire through a magnetic field produces an electric current. The focus is on NGSS 3 … At t < 0, the switch K is at 1. 6.1 Fig. The resonance frequency LC 1 = o ω 6.3 Phasor The sinusoidal quantity i = I m cos( ω t+ ϕ ) is represented by a vector of length I m which rotates around the origin with the angular speed ω (Fig. No enrollment or registration. Electricity and Magnetism.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. b) Could one use a variable resistor instead of an inductor? Electric charge is always conserved. Modify, remix, and reuse (just remember to cite OCW as the source. At time t = 0 this vector is the phasor I m ∠ ϕ of the sinusoidal quantity. This is one of over 2,200 courses on OCW. Freely browse and use OCW materials at your own pace. Faith Academy KANNAN . Electricity ppt is mainly for CE electronics, parallel and series circuits, resistance use of diodes and truth tables. Electricity and Magnetism Section 8.2 Moving charges and magnetic fields Moving charges, like those in an electric current, produce magnetic fields The magnetic PPT PPT On ELECTRICITY AND MAGNETISM IGCSE. Powerpoints. 6.4) the current in the inductor lags the voltage by 90 ° . When S 1 is closed and S 2 is open, i lags e by 30 ° . An atom is so small that human eyes cannot see it. What is an electromagnet? Note: Your 9 digit Mobile Number without +971. SUBMIT . Electricity And Magnetism 837169 PPT. MIT OpenCourseWare is a free & open publication of material from thousands of MIT courses, covering the entire MIT curriculum. The atom is the basic building block of matter. The capacitor C has circular plates of radius a, the space between the two plates is d = 0.1mm. Electricity, magnetism and electromagnetism airwave12. 6.6) The impedance of the circuit Electricity and Magnetism 61 2 ω ω       +== C 1 -LR I V z 2 m m The phase constant R C 1 -L ω ω )tan( = ϕ C 1 L ω ω > : the circuit is more inductive than capacitive, the current i lags the voltage e. C 1 L ω ω < : the circuit is more capacitive than inductive, the current i leads the voltage e. C 1 L ω ω = : the circuit is in resonance, the current i and the voltage e are in phase. 3.- Magnetic materials become a magnet when they are next to it, this effect is called induced magnetism… Fig. The impedance of the capacitor ωC 1 == m m I V z I m , V m : amplitude of i and e, respectively. P6.1 with e(t) = 12sin(120 π t) V. When S 1 and S 2 are open, i leads e by 30 ° . In a circuit, it is important to be able to turn it off and on. Physics I made this for my group to gather info for a ppt to present in Professor Davidian's class. Find materials for this course in the pages linked along the left. Find the value of R such that the power in R is maximized ? 6.3 Fig. P6.4 6.5) Consider the circuit in Fig. Introduction to TEAL; Fields; Review of gravity; Electric field, Electric charge; Electric fields; Dipoles; Continuous charge distributions, Coordinate systems; Gradients; Line and surface integrals, Working in groups, electric potential, E from V, Magnetic fields: Creating magnetic fields - Biot-Savart, Magnetic fields: Creating magnetic fields - Ampere's Law, Magnetic fields: Feeling magnetic fields - charges and dipoles, Magnetic levitation; Magnetic forces on dipoles, Magnetic fields: Force and torque on a current loop, Mutual inductance and transformers; Inductors, Inductors and magnetic energy; RL circuits, Maxwell's equations, EM radiation and energy flow, Maxwell's equations, EM radiation and energy flow (cont. Electricity and Magnetism - Basic Concepts KANNAN . What are R, L and C ? If you click on them, you can see larger versions. It refers to… 6.7 Fig. Facts we have discovered about magnetism. Magnets •Materials that attract other metals •Three classes: natural, artificial and electromagnets •Permanent or Temporary •CRITICAL to electric systems: – Generation of electricity – Operation of motors – Operation of relays. 6.8 6.4 Transformer (Fig. Find materials for this course in the pages linked along the left. 6.1) U = U E + U B = 2 Li 2 1 + 2 c Cv 2 1 [J] (6.1) 1) Undamped Oscillation Consider the circuit in Fig. Home The unit of electric charge is coulomb (C). Made for sharing. MIT OpenCourseWare is a free & open publication of material from thousands of MIT courses, covering the entire MIT curriculum.. No enrollment or registration. 6.7). ), Learn more at Get Started with MIT OpenCourseWare, MIT OpenCourseWare makes the materials used in the teaching of almost all of MIT's subjects available on the Web, free of charge. 6.2. Electricity exists in the smallest particle in nature called the atom. Children can use their knowledge and understanding to justify or refute the ideas given for each scenario. Electricity and Magnetism 63 b) Find the electric field E, the magnetic field B and the displacement current i d between the capacitor plates. 6.7) A typical “light dimmer” used to dim the stage lights in a theater consist of a variable inductor L connected in series with the light bulb B as shown in the figure P6.7. Electricity and Magnetism Definition The Physical phenomena involving electric charges, their motions, and their effects. If a dissipative element R is present dt dU = Li dt di + Cv c dt dv c = -Ri 2 (6.7) ⇒ LC 2 c 2 dt vd + RC dt dv c + v c = 0 (6.8) ⇒ v c (t) = V o e -Rt/2L cos( ω t+ ϕ o ) (6.9) Electricity and Magnetism 60 where 2 ) L2 R ( LC 1 −=ω 6.2 Alternating current circuit 1) Resitive load : (Fig. Find i R (t), i L (t), i C (t), V(t), the storage energy of the capacitor, the storage energy of the inductor, and the total storage energy in 3 cases : a) ω = 500 rad/s, b) ω = 1000 rad/s, c) ω = 2000 rad/s Fig. P6.1 Fig. When an electric current is passed through a coil of wire wrapped around a metal core, a very strong magnetic field is produced. P6.4 where R = 100 Ω , L = 100mH, C = 10 µ F, e = 100sin( ω t) volts. P6.2 with e(t) = 12sin(120 π t) V, r = 10 Ω . Magnetism covers attraction repulsion, magnetic field patterns. Summary: the convenience and safety of household Electricity depend on how the electric field and for! 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