'Changing magnetic field produces' presentation slideshows

Chapter 21

Chapter 21. Magnetic Induction. Magnetic Induction. Electric and magnetic forces both act only on particles carrying an electric charge Moving electric charges create a magnetic field A changing magnetic field creates an electric field This effect is called magnetic induction

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Motional EMF This is the emf induced in a conductor moving through a magnetic field.

Last lecture. Motional EMF This is the emf induced in a conductor moving through a magnetic field. Examples on sheet 10. To change the magnetic flux we can change: the magnitude B of the magnetic field within the coil

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Radio Waves

Radio Waves. Electromagnetic Radiation Radio Transmission and Reception Modulation Techniques. Electromagnetism. Electricity and magnetism are different facets of electromagnetism recall that a static distribution of charges produces an electric field

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Radio Waves

Radio Waves. Electromagnetic Radiation Radio Transmission and Reception Modulation Techniques. Electromagnetism. Electricity and magnetism are different facets of electromagnetism recall that a static distribution of charges produces an electric field

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Back EMF, Counter Torque & Eddy Currents

Back EMF, Counter Torque & Eddy Currents. Example: Back EMF in a Motor. The armature windings of a dc motor have a resistance of 5.0 ? . The motor is connected to a 120-V line, & when the motor reaches full speed against its normal load, the back EMF is 108 V. Calculate

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EMR Introduction

EMR Introduction. Lesson One. You will be able to. Describe qualitatively how electromagnetic radiation is produced Identify the various parts of the electromagnetic spectrum Explain how electromagnetic radiation waves are produced and transmitted. James Clerk Maxwell (1865).

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