Induction Current is produced in a conductor when it is moved through a magnetic field because the magnetic lines of force are applying a force on the free electrons in the conductor and causing them to move. This process of generating current in a conductor by placing the conductor in a changing magnetic field is called induction. This is called induction because there is no physical connection between the conductor and the magnet. The current is said to be induced in the conductor by the magnetic
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ELECTROMAGNETIC INDUCTION Electromagnetic induction is the production of an electromotive force across a conductor when it is exposed to a varying magnetic field. It is described mathematically by Faraday’s law of induction‚ named after Michael Faraday who is generally credited with the discovery of induction in 1831. Electromagnetic induction was discovered independently by Michael Faraday and Joseph Henry in 1831; however‚ Faraday was the first to publish the results of his experiments.[4][5] In
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diaphragm vibrates back and forth‚ and the attached coil moves along with it. Additionally‚ magnet is attached with coils on a cardboard. When the coil alternately approaches and move back from the magnet‚ the flux through the coil changes. As a result of this‚ an ac emf is induced in the coil. Next‚ this electrical signal is sent to an amplifier and to the speakers respectively. In a moving-magnet microphone‚ the magnet is attached to the diaphragm and moves relative to a stationary coil. The handmade
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What is electromagnetic radiation? Electromagnetic energy is a term used to describe all the different kinds of energies released into space by stars such as the Sun. These kinds of energies include some that you will recognize and some that will sound strange. They include: * Radio Waves * TV waves * Radar waves * Heat (infrared radiation) * Light * Ultraviolet Light (This is what causes Sunburns) * X-rays (Just like the kind you get at the doctor’s office) * Short waves
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Types of Magnets Objects having magnetic field is called as magnets. Normally magnets are of two types- Permanent magnets and Electro magnets. Permanent magnets are those magnets which occur in nature and do not depend upon external source for their magnetic field. On the other hand electromagnets are those magnets which use electric current to generate magnetic field. Classification of Magnets There are different types of magnets with different physical and magnetic properties and strength
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Chapter 2 Review of Related Literature Electromagnetic is one branch of physics. It was concerned with magnetism produced by electric currents and with the interaction of electric and magnetic fields. Electromagnetism is defined the interaction between a magnetic field and an electric field. People use electromagnetic to transmit electricity to other place‚ to supply electricity form magnetic fields and to store and conserve energy. Electromagnet has components of strong interaction‚ weak interaction
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Electromagnetic Waves Although you might not know it you’re constantly surrounded by thousands of electromagnetic waves every day. Sunlight and x-rays are only two types of electromagnetic waves‚ other types are: radio wave‚ infrared rays‚ ultra-violet rays and gamma rays Nature of an electromagnetic wave Electric and magnetic fields are not made up of matter. An electromagnetic wave consists of an electric and magnetic field and doesn’t need a medium to exist. They are the regions through
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1 Electromagnetic Induction: Faraday’s Law OBJECTIVE: To understand how changing magnetic fields can produce electric currents. To examine Lenz’s Law and the derivative form of Faraday’s Law. EQUIPMENT: Circular Coils apparatus‚ PC sound card‚ FFTScope‚ magnet ‚ paper clip‚ cables‚ small (magnetic) compass‚ paper clip‚ multimeter w/long cable INTRODUCTION: Have you ever wondered how a telephone works? You may recall (perhaps in middle school or high school) that sound waves from your voice are converted
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Name____________________ Magnet Lab Problems: 1. How does a compass react when moved around a bar magnet? 2. How can you tell that a magnetic field is produced when electricity flows through a wire? 3. As you move further away from a magnet‚ what happens to the magnetic field strength? What is this similar to? Hypotheses: 1. _________________________________________________________________ 2. _________________________________________________________________ 3.
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Physics Formal Lab Report By David Deng The Electromagnetic Force: An Equation Introduction This lab is to measure the determinant factors of the size of electromagnetic force that affect with electric and magnetic fields. The electromagnetic force is carried by the photon and is responsible for atomic structure‚ chemical reactions‚ the attractive and repulsive forces associated with electrical charge and magnetism‚ and all other electromagnetic phenomena. According to Coulomb’s Law‚ we know
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