hw6sols

# hw6sols - MasteringPhysics 3/3/08 6:23 PM Assignment...

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3/3/08 6:23 PM MasteringPhysics Page 1 of 9 http://session.masteringphysics.com/myct Assignment Display Mode: View Printable Answers Physics 202 Assignment 6 Due at 11:00pm on Wednesday, March 5, 2008 View Grading Details Magnetic Force on Charged Particles Conceptual Question Description: Simple conceptual questions about the direction of the magnetic force vector acting on various charges moving through a magnetic field. For each of the situations below, a charged particle enters a region of uniform magnetic field. Determine the direction of the force on each charge due to the magnetic field. Part A Determine the direction of the force on the charge due to the magnetic field. Hint A.1 Determining the direction of a magnetic force A charged particle moving through a region of magnetic field experiences a magnetic force, unless the velocity and magnetic field are parallel. If the velocity is parallel to the magnetic field, then the force is zero. Otherwise, the direction of the force can be found by using the right-hand rule. To employ the right hand rule: 1. Open your hand so that it is completely flat, and point the fingers of your right hand in the direction of the velocity vector. 2. Rotate your wrist until you can bend your fingers to point in the direction of the magnetic field. 3. The direction of your outstretched thumb is the direction of the magnetic force on a positive charge. ANSWER: points into the page. points out of the page. points neither into nor out of the page and . . Part B

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3/3/08 6:23 PM MasteringPhysics Page 2 of 9 http://session.masteringphysics.com/myct Determine the direction of the force on the charge due to the magnetic field. Hint B.1 Determining the direction of a magnetic force A charged particle moving through a region of magnetic field experiences a magnetic force, unless the velocity and magnetic field are parallel. If the velocity is parallel to the magnetic field, then the force is zero. Otherwise, the direction of the force can be found by using the right-hand rule. To employ the right hand rule: 1. Open your hand so that it is completely flat, and point the fingers of your right hand in the direction of the velocity vector. 2. Rotate your wrist until you can bend your fingers to point in the direction of the magnetic field. 3. The direction of your outstretched thumb is the direction of the magnetic force on a positive charge. ANSWER: points out of the page. points into the page. points neither into nor out of the page and . . Part C Determine the direction of the force on the charge due to the magnetic field. Note that the charge is negative. Hint C.1 Effect of a magnetic field on a negative charge You can use the right-hand rule to determine the direction of the force exerted on a positive charge. Once you find the direction of the force that would be exerted on a positive charge, the force on a negative charge will point in the opposite direction.
3/3/08 6:23 PM MasteringPhysics Page 3 of 9 http://session.masteringphysics.com/myct

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## This note was uploaded on 10/29/2008 for the course PHYS 202 taught by Professor Everett during the Fall '08 term at Wisconsin.

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hw6sols - MasteringPhysics 3/3/08 6:23 PM Assignment...

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