'Motional emf' diaporamas de présentation

Lecture 13.1

Lecture 13.1. Chapter 34. Electromagnetic Induction. This chapter: Changing magnetic field creates electric field (induced electric field) The Next chapter: Changing electric field creates magnetic field. Magnetism Move charges generate magnetic field

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Chapter 33

Chapter 33. Electromagnetic Induction. Demo Faraday. Some experiments. Motional emf. Motional emf (cont.). Reach equilibrium. Problem 33.1.

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Lectures 16-17 (Ch. 29) Electromagnetic Induction

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Chapter 20

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Exam next Friday!!

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Electromagnetic Induction

Electromagnetic Induction. I can cause B. Can B cause I?. YES!. We need:. Loop (complete circuit). Magnetic Field. THE EMF INDUCED IN A MOVING CONDUCTOR. Each charge within the conductor is moving and experiences a magnetic force . The separated charges on the

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Faraday's Law

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Motors

Motors. Physics 102 Professor Lee Carkner Lecture 21. Ring in Solenoid. To get maximum flux, the ring should face up (parallel with the coils) We need to find the flux through the loop before and after the current is switched off F = BA cos q = BA

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Chapter 22

Chapter 22. Electromagnetic Induction. 1) Induced emf and induced current. Changing B-field induces current. Changing coil area or orientation induces current. Changing the number of lines of force through loop induces current. Induced current indicates induced emf and induced electric field.

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Motors

Motors. Physics 102 Professor Lee Carkner Lecture 21. Ring in Solenoid. If the current flows clockwise through the solenoid, the B field inside is straight down We need to find the flux through the loop before and after the current is switched off F = BA cos q = BA

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Magnetic Induction

Magnetic Induction. Transforming energy with magnetism. F = qv ? B. Lorentz Force Reminder. Source : Griffith, The Physics of Everyday Phenomena. F is directed out of the screen. CPS Question. What is the direction of the Lorentz force on the charges moving in this wire?. B. A. D. B.

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PHYS 221 Recitation

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PreAP Electromagnetism

PreAP Electromagnetism. Magnetic Force in a Wire. Since a wire is moving current if it is in a magnetic field there will be a force that can be determined using F = ILB sin ?. Magnetic Field by a wire. A current carrying wire also produces a magnetic field. Right Hand Rule #2.

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Announcements WebAssign HW Set 7 due this Friday Problems cover material from Chapters 20

Announcements WebAssign HW Set 7 due this Friday Problems cover material from Chapters 20 Estimated course grades available on e-learning O ffice hours: Tea and Cookies with Prof. Kumar, 5 pm today, room 2165 My office hours Th 2-3 pm or make an appointment

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Electromagnetic Induction

Electromagnetic Induction. Chapter 22. 22.1 induced EMF and Induced Current. If a coil of conducting material and a magnet are moving (relative to one another) an electric current can be induced . The changing magnetic field forces the electrons to move one direction or another.

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Lecture 30

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Today4/28

Today4/28. Lab: Electromagnetic Induction Last one!. Final Exam Topics waves interference refraction lenses/mirrors E-Fields potential plates capacitance circuits B-fields. Final Exam. Tuesday, 5/13, 10:15am Witmer 116 Problems pulled from Lecture HW exams

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Motional emf

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Induced E-Field

Induced E-Field . Motio nal EMF.

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