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4. Faraday's Law of Induction and Lenz' Law Faraday's Law of Induction and Lenz's Law Induction, AC Circuits, and Electrical Technolo... > Faraday's Law of Induction and Lenz's Law Free to share, print, make copies and changes. Get yours at www.boundless.com www.boundless.com/physics?campaign_content=book_5818_section_180&campaign_term=Physics&utm_campaign=powerpoint&utm_medium= direct&utm_source=boundless

5. The minus in the Faraday's law means that the EMF creates a current I and magnetic field B that oppose the change in flux Δthis is known as Lenz' law. Faraday's law of induction is the fundamental operating principle of transformers, inductors, and many types of electrical motors, generators, and solenoids. Faraday's law states that the EMF induced by a change in magnetic flux depends on the change in flux Δ, time Δt, and number of turns of coils. Faraday's Law of Induction and Lenz' Law Free to share, print, make copies and changes. Get yours at www.boundless.com www.boundless.com/physics/textbooks/alternative-to-physics-9th-john-d-cutnell-kenneth-w-johnson-1118129172-9781118129173/induction-ac- circuits-and-electrical-technologies-induction-22/faraday-s-law-of-induction-and-lenz-s-law-180/faraday-s-law-of-induction-and-lenz-law-647- 6693?campaign_content=book_5818_section_180&campaign_term=Physics&utm_campaign=powerpoint&utm_medium=direct&utm_source=bou ndless Lenz' Law View on Boundless.com Induction, AC Circuits, and Electrical Technolo... > Faraday's Law of Induction and Lenz's Law

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7. Key terms electromotive force (EMF)—The voltage generated by a battery or by the magnetic force according to Faraday's Law. It is measured in units of volts, not newtons, and thus, is not actually a force. flux The rate of transfer of energy (or another physical quantity) through a given surface, specifically electric flux or magnetic flux. solenoid A coil of wire that acts as a magnet when an electric current flows through it. Free to share, print, make copies and changes. Get yours at www.boundless.com Induction, AC Circuits, and Electrical Technolo...

8. Lenz' Law (a) When this bar magnet is thrust into the coil, the strength of the magnetic field increases in the coil. The current induced in the coil creates another field, in the opposite direction of the bar magnet's to oppose the increase. This is one aspect of Lenz's law—induction opposes any change in flux. (b) and (c) are two other situations. Verify for yourself that the direction of the induced Bcoil shown indeed opposes the change in flux and that the current direction shown is consistent with the right hand rule. Free to share, print, make copies and changes. Get yours at www.boundless.com Connexions. "Faraday's Law of Induction: Lenz's Law." CC BY 3.0 http://cnx.org/content/m42392/latest/ View on Boundless.comCC BY 3.0http://cnx.org/content/m42392/latest/View on Boundless.com Induction, AC Circuits, and Electrical Technolo...

9. Free to share, print, make copies and changes. Get yours at www.boundless.com Induction, AC Circuits, and Electrical Technolo... Faraday's law of induction is the fundamental operating principle of A) inductors B) generators C) All of these answers D) transformers

10. Free to share, print, make copies and changes. Get yours at www.boundless.comwww.boundless.com Boundless - LO. "Boundless." CC BY-SA 3.0 http://www.boundless.com/CC BY-SA 3.0http://www.boundless.com/ Induction, AC Circuits, and Electrical Technolo... Faraday's law of induction is the fundamental operating principle of A) inductors B) generators C) All of these answers D) transformers

11. Attribution Wikipedia. "Faraday's law of induction." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Faraday%2527s_law_of_inductionCC BY-SA 3.0http://en.wikipedia.org/wiki/Faraday%2527s_law_of_induction Connexions. "Faraday's Law of Induction: Lenz's Law." CC BY 3.0 http://cnx.org/content/m42392/latest/CC BY 3.0http://cnx.org/content/m42392/latest/ Wiktionary. "flux." CC BY-SA 3.0 http://en.wiktionary.org/wiki/fluxCC BY-SA 3.0http://en.wiktionary.org/wiki/flux Wiktionary. "solenoid." CC BY-SA 3.0 http://en.wiktionary.org/wiki/solenoidCC BY-SA 3.0http://en.wiktionary.org/wiki/solenoid Wikipedia. "electromotive force." CC BY-SA 3.0 http://en.wikipedia.org/wiki/electromotive%20forceCC BY-SA 3.0http://en.wikipedia.org/wiki/electromotive%20force Free to share, print, make copies and changes. Get yours at www.boundless.com Induction, AC Circuits, and Electrical Technolo...