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Unformatted text preview: Bfield I d l Magnetic force is related to cross product of currentcarrying wire element (as a vector) and magnetic field. Magnetic force obeys righthand rule . in reverse B l I F magnetic r r r = 6 Magnetic field can be measured by force on current carrying wire . 7 Example Problem HW103. (HRW 2818) An electron is accelerated from rest by a potential difference of 350 V. It then enters a uniform magnetic field of magnitude 200 mT with its velocity perpendicular to the field. Calculate (a) the speed of the electron and (b) the radius of its path in the magnetic field. 8 Example Problem HRW 2867 Physicist S. A. Goudsmit devised a method for measuring the mass of heavy ions by timing their period of revolution in a known magnetic field. A singly charged ion of iodine makes 7.00 rev in a 45.0 mT field in 1.29 ms. Calculate its mass in atomic mass units....
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This note was uploaded on 02/20/2008 for the course PHYSIC 2 taught by Professor Kim during the Spring '08 term at Lehigh University .
 Spring '08
 Kim
 Force

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