© 2013 Pearson Education, Inc. Planar charged electrodes guide electrons Cathode Ray Tube.

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Presentation transcript:

© 2013 Pearson Education, Inc. Planar charged electrodes guide electrons Cathode Ray Tube

© 2013 Pearson Education, Inc. Application of Electric Fields: E-Ink

© 2013 Pearson Education, Inc. An Expert in Electric Fields Electric eel

© 2013 Pearson Education, Inc. Field Lines Around Eel’s Body

© 2013 Pearson Education, Inc. Ampullae of Lorenzini: Shark Electric Field Sensors

© 2013 Pearson Education, Inc. Charges Influence Surrounding Space

© 2013 Pearson Education, Inc. We believe in electric fields as physically real because there is an influence that can be independent of the particle that created the field.

© 2013 Pearson Education, Inc. Field Lines of Electric Dipole

© 2013 Pearson Education, Inc.

If I put a charged point particle (blue dot) on a field line, then the particle will move so as to follow the field line. A True B False

© 2013 Pearson Education, Inc. At which point is the electric field stronger? A. Point A. B. Point B. C. Not enough information to tell.

© 2013 Pearson Education, Inc. Can Electric Field Vectors Cross? (A) Yes (B) No (C) No idea

© 2013 Pearson Education, Inc. Which is the electric field direction at the black dot? E. None of these. Slide

© 2013 Pearson Education, Inc. What is the direction of the electric field at the dot? E. None of these. Slide 26-22

© 2013 Pearson Education, Inc. Can Electric Field Lines Cross? (A) Yes (B) No (C) No idea

© 2013 Pearson Education, Inc. At the dot, the y -component of the electric field due to the shaded region of charge is A. B. C. D. E.

© 2013 Pearson Education, Inc. ABCDABCD E What is E field magnitude at point P distance y from midline of two infinite charged lines

© 2013 Pearson Education, Inc. Which dipole experiences no net force in the electric field? A. B. C. A.Dipole A. B.Dipole B. C.Dipole C. D.Both dipoles A and C. E.All three dipoles.

© 2013 Pearson Education, Inc. Which dipole experiences no net torque in the electric field? A. Dipole A. B. Dipole B. C. Dipole C. D. Both dipoles A and C. E. All three dipoles. Slide A. B. C.

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