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P219lecture08magnetic

# P219lecture08magnetic - Goal To understand Electromagnetic...

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Goal: To understand Electro- magnetic fields Objectives: 1) To learn about Magnetic Fields 2) To be able to calculate the magnitude of Magnetic Forces 3) To know how to use the Right Hand Rule to get the direction of the magnetic force 4) To understand Motions of particles in a Magnetic field 5) To learn about Cyclotrons

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Magnetic Fields Just like with electric fields and gravitational fields, magnetic fields are an indicator of the magnetic topography of the region. One example to illustrate this is the magnetic dipole or bar magnet.
Bar magnets All have 2 ends, North and South This is like + and – for charges. This creates a field where charges for from the north pole to the south pole just like they went from + charge (high potential) to – (low potential)

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Magnetic Field Lines Much like we had electric field lines we have magnetic field lines. These are the lines which charges would follow (sort of). These are the lines that charges or magnetic materials would follow
Earth’s magnetic field (NASA)

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Magnetic Force The magnetic force is very complicated. With electric fields the force is towards charges usually. However, with magnetic forces, the force is PERPENDICULAR to the magnetic field.
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