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Principles of Electromechanics: Electricity to Motion and Vice Versa

Explore the generation of magnetic fields, Faraday's law, electric current, and the interaction of electricity and motion in motors, generators, and magnetic fields. Understand circular motion, helical paths, and practical applications in accelerators like cyclotrons.

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Principles of Electromechanics: Electricity to Motion and Vice Versa

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  1. Principles of Electromechanics Electricity  Motion Electricity  Motion: Motor Motion  Electricity: Generator  Magnetic Field & Faraday’s Law

  2. N S Magnetic Field • Generation of magnetic field • Permanent Magnet: • Electric Current: using right hand rule to determine the field direction • Straight current • Current coil

  3. × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × -q V × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × I F r F Current  Motion: Current in magnetic field • Magnetic field will exert a force on a current • Magnetic field will exert a force on a moving charge

  4. × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × -q V F r Circular Motion: Plane  B Helical path: V||0 Circular path: V||=0

  5. Charges in B field: Applications Cyclotron (accelerator) Mass Spectrometer:

  6. Example: Rail Gun Acceleration: 5  106 g Final speed: 1 km/s Duration: 1 ms

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