Lecture%2017%202220%20Spring%202009 - Announcements and...

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1 Announcements and Reminders Exam scores will be curved and posted by tomorrow morning; exams will be returned in recitation. Homework 10 is due tomorrow ; HW 11 is due Friday. Turn in a piece of paper with name and responses if you don’t have your clicker with you today, or if you haven’t given me your clicker ID yet F B on a Charge Moving in a Magnetic Field: Formula The properties can be summarized in a vector equation: F B = q v x B F B is the magnetic force q is the charge v is the velocity of the moving charge B is the magnetic field Units of Magnetic Field The SI unit of magnetic field is the tesla (T) Wb is a weber The cgs unit is a gauss (G) 1 T = 10 4 G 2 ( / ) Wb N N T m C m s A m Typical Magnetic Field Values Example Lorentz Force The combined force on a charged particle due to electric and magnetic fields is referred to as the Lorentz force : F Lorentz = q ( E + v x B )
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2 Magnetic Force on a Current Carrying Conductor A force is exerted on a current-carrying wire placed in a magnetic field
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Lecture%2017%202220%20Spring%202009 - Announcements and...

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