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Chapter 26 Magnetism

Magnetic fields and field lines. Navigation with magnetism. Magnetic declinationAngle of dipEarth's north pole is a south pole magnetically. Magnetic field empirical observations. The force is proportional to chargeThe force is proportional to charge's speedWhen the velocity vector is parallel to the field there is no forceThe force is perpendicular to both the velocity and field vectorsThe force on a positive moving charge is opposite that on a negative moving chargeThe force on is propo29841

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Chapter 26 Magnetism

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    1. Chapter 26 Magnetism Poles – Location where the magnetic effect is the strongest North pole – pole of a freely suspended magnet which points towards geographic north South pole - pole of a freely suspended magnet which points towards geographic south Like pole repel, Unlike poles attract

    2. Magnetic fields and field lines

    3. Navigation with magnetism Magnetic declination Angle of dip Earth’s north pole is a south pole magnetically

    4. Magnetic field empirical observations The force is proportional to charge The force is proportional to charge’s speed When the velocity vector is parallel to the field there is no force The force is perpendicular to both the velocity and field vectors The force on a positive moving charge is opposite that on a negative moving charge The force on is proportional to the sin of the angle between the velocity vector and the magnetic field.

    5. Right Hand Rule

    6. Cross product review

    7. Units

    8. And there is a force on a current carrying wire due to a magnetic field

    9. And there is a force on a current carrying wire due to a magnetic field

    10. Differences Between Electric and Magnetic Fields Work The electric force does work in displacing a charged particle The magnetic force associated with a steady magnetic field does no work when a particle is displaced This is because the force is perpendicular to the displacement

    14. Bending of an Electron Beam Electrons are accelerated from rest through a potential difference Conservation of energy will give v Other parameters can be found

    15. Force on a charge moving in a magnetic field

    16. Cyclotron

    17. Motion of a Particle, General If a charged particle moves in a magnetic field at some arbitrary angle with respect to B, its path is a helix Same equations apply, with

    19. Application: velocity selector

    21. Application: mass spectrometer

    24. Application: Hall effect

    25. Application: Hall effect

    26. Torque on a current loop in a uniform magnetic field

    27. Torque on a current loop in a uniform magnetic field

    28. Application: Galvanometer

    29. Application: DC Motor

    31. Application: DC motor commutator

    32. Wires carrying current create magnetic fields

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