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**Unformatted text preview: **Modified from College Physics , 7 th Ed., Serway, Faughn, and Vuille. For the quizzes and tests, you should know all the concepts and equations in this summary. Introduction: Magnetic fields are a way of describing Coulomb’s law forces for moving charges. Moving charges produce magnetic fields. Moving test charges feel magnetic forces. Section 19.3: Magnetic Fields The magnetic force that acts on a charge q moving with velocity v G in a magnetic field B G has magnitude θ sin qvB F = [19.1] B G . where is the angle between v and G To find the direction of this force, use right-hand rule number 1 : point the fingers of your open right hand in the direction of v and then curl them in the direction of G B G . Your thumb then points in the direction of the magnetic force G . F If the charge is negative rather than positive, the force is directed opposite the force given by the right-hand rule....

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