Lecture02_fall2011 - Fall 2010 Prof. Yong Chen (...

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Unformatted text preview: Fall 2010 Prof. Yong Chen ( yongchen@purdue.edu ) Prof. Michael Manfra ( mmanfra@purdue.edu ) Lecture 1 Slide 1 PHYS 272: Matter and Interactions II -- Electric And Magnetic Interactions http://www.physics.purdue.edu/academic_programs/courses/phys272/ PHYSICS 272 Electric & Magnetic Interactions Lecture 2 Superposition Principle & Electric Dipoles Fall 2010 Prof. Yong Chen ( yongchen@purdue.edu ) Prof. Michael Manfra ( mmanfra@purdue.edu ) Lecture 1 Slide 2 PHYS 272: Matter and Interactions II -- Electric And Magnetic Interactions http://www.physics.purdue.edu/academic_programs/courses/phys272/ General Information We will use WebAssign for homework assignments. You must PRINT the Lab notes PRIOR to Lab the notes are posted on the course homepage. The first homework is posted and due Sunday night You will be able to access your scores in CHIP . You must register your iclicker on CHIP . For questions concerning WebAssign contact: V.K. Saxena: Office: PHYS 176 , Phone: 49575 Email: saxena@purdue.edu Fall 2010 Prof. Yong Chen ( yongchen@purdue.edu ) Prof. Michael Manfra ( mmanfra@purdue.edu ) Lecture 1 Slide 3 PHYS 272: Matter and Interactions II -- Electric And Magnetic Interactions http://www.physics.purdue.edu/academic_programs/courses/phys272/ This Week Study chapter 13 Lab will start this Wed, Thurs, Friday Do Homework in WebAssign Announcement Please print your lab manual BEFORE coming to Lab! Fall 2010 Prof. Yong Chen ( yongchen@purdue.edu ) Prof. Michael Manfra ( mmanfra@purdue.edu ) Lecture 1 Slide 4 PHYS 272: Matter and Interactions II -- Electric And Magnetic Interactions http://www.physics.purdue.edu/academic_programs/courses/phys272/ 2 2 1 4 1 r Q Q F F = = Q 1 Q 2 F F "The magnitude of the electrostatic force between two point charges is directly proportional to the magnitudes of each charge and inversely proportional to the square of the distance between the charges." The Coulomb Force Law Charles-Augustin de Coulomb (1736 - 1806) Fall 2010 Prof. Yong Chen ( yongchen@purdue.edu ) Prof. Michael Manfra ( mmanfra@purdue.edu ) Lecture 1 Slide 5 PHYS 272: Matter and Interactions II -- Electric And Magnetic Interactions http://www.physics.purdue.edu/academic_programs/courses/phys272/ The Coulomb Force Law F = 1 4 Q 1 Q 2 r 2 r 0 = permittivity constant of vacuum (air is close) Force repulsive 1 + + 2 r F 21 Force attractive +- 2 r F 21 1 The force exerted by one point charge on another acts along line joining the charges. The force is repulsive if the charges have the same sign and attractive if the charges have opposite signs. Force on 2 by 1 Fall 2010 Prof. Yong Chen ( yongchen@purdue.edu ) Prof. Michael Manfra ( mmanfra@purdue.edu ) Lecture 1 Slide 6 PHYS 272: Matter and Interactions II -- Electric And Magnetic Interactions http://www.physics.purdue.edu/academic_programs/courses/phys272/ Units and Constants SI units of electric charge : Coulomb, C Constants : 1/4 0 = 9x10 9 N...
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This note was uploaded on 09/13/2011 for the course PHY 172 taught by Professor Anderson during the Spring '10 term at Purdue University-West Lafayette.

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Lecture02_fall2011 - Fall 2010 Prof. Yong Chen (...

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