Physics 213 General PhysicsSlide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Magnetic Field Lines, sketchMagnetic Field Lines, Similar to Electric DipoleSlide 12Slide 13Slide 14Earth’s Magnetic FieldA Few Typical B ValuesSlide 17Slide 18Slide 19Determining the Direction of Force, the Right Hand RuleRight Hand Rule ExamplesSlide 22Slide 23Slide 24Slide 25Physics 213General PhysicsLecture 802Last Meeting: Kirchhoff Rules, RC Circuit Today: Magnetism & Magnetic Field3Magnetic Resonance Imaging(MRI)Maglev TrainMaglev TrainExamples of Other Magnetic Field ApplicationsExamples of Other Magnetic Field Applications7Demo Magnetic Materials, Magnets Dip Meter Attraction and Repulsion89Demo: iron filingsMagnetic Field Lines, sketchA compass can be used to show the direction of the magnetic field lines (a)A sketch of the magnetic field lines (b)Magnetic Field Lines, Similar to Electric DipoleMagnetic Dipole Electric Dipole121314Earth’s Magnetic FieldThe Earth’s magnetic field resembles that achieved by burying a huge bar magnet deep in the Earth’s interiorA Few Typical B ValuesConventional laboratory magnets25000 G or 2.5 TSuperconducting magnets300000 G or 30 TEarth’s magnetic field0.5 G or 5 x 10-5 T17Crookes Tube1819Determining the Direction of Force, the Right Hand Rule Point your fingers in the direction of Curl the fingers in the direction of the magnetic field, Your thumb points in the direction of the force, , on a positive charge If the charge is negative, the force is opposite that determined by the right hand rulevrBrFr.v-eBFFv-eBRight Hand Rule ExamplesVelocity out of page.Velocity into
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