Chapter 28 Magnetic Fields In this chapter we will cover the following topics: Magnetic field vector, Magnetic force on a moving charge, Magnetic field lines Motion of a moving charge particle in a uniform magnetic field Magnetic force on a current-carrying wire Magnetic torque on a wire loop Magnetic dipole, magnetic dipole moment Hall effect Cyclotron particle accelerator (28-1)

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P magnetic field line magnetic field lines P Q (28-6)

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Cathode Anode (28-8)

. electron C r (28-9)

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. i (28-12)

C Top view Side view (28-13)

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