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# Principles of Electromechanics - PowerPoint PPT Presentation

Principles of Electromechanics. Electricity  Motion Electricity  Motion: Motor Motion  Electricity : Generator  Magnetic Field & Faraday’s Law. N. S. Magnetic Field. Generation of magnetic field Permanent Magnet:

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## PowerPoint Slideshow about ' Principles of Electromechanics' - ardelle-york

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Presentation Transcript

Electricity  Motion

Electricity  Motion: Motor

Motion  Electricity: Generator

 Magnetic Field & Faraday’s Law

S

Magnetic Field

• Generation of magnetic field

• Permanent Magnet:

• Electric Current: using right hand rule to determine the field direction

• Straight current

• Current coil

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

-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

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

-q

V

F

r

Circular Motion: Plane  B

Helical path: V||0

Circular path: V||=0

Cyclotron (accelerator)

Mass Spectrometer:

Acceleration: 5  106 g

Final speed: 1 km/s

Duration: 1 ms