PHYS 6B Lecture Notes - Lecture 15: Electric Field

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27 Aug 2016
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PHYS 6B Full Course Notes
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PHYS 6B Full Course Notes
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Magnetic field and motion of the charge are in opposite direction. Positive charges will be pushed upwards causing a counterclockwise motion of current. If velocity changes direction the the direction of current will always change. If ia is decreasing then ib will be clockwise in the same direction as ia. Current in same direction attract and current in different directions repel. Moving closer and moving away causes the same result. Moving magnet is not a magnetic force but an electric field being generated inside coil. A changing magnetic field generates an electric field=induced field. An induced current will always flow to attempt to preserve the status quo. A current with flow that makes the magnetic field point to the left. To preserve the magnetic flow of the magnetic field point to the left the current must flow clockwise. Induced current is due to the induced emf to preserve the status quo.

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