Chapter 27 Electromagnetic Induction and Faradays Law Chapter 27 Electro-Magnetic Induction and faraday's Law 1. The Law of Electro-Magnetic Induction 2. Motional induced emf
Chapter 27 Electromagnetic Induction and Faraday’s Law Chapter 27 Electro-Magnetic Induction and Faraday’s Law 1. The Law of Electro-Magnetic Induction 2. Motional & Induced Emf
Chapter 27 Electromagnetic Induction and faraday's law New words and Expressions magnetic flux 磁通量 electromagnetic induction 电磁感应 induced current 感应电流 electromotive force(emf) 电动势 induced emf 感应电动势 magnetic flux linkage 磁通链 motion electromotive force 动生电动势
Chapter 27 Electromagnetic Induction and Faraday’s Law New words and Expressions magnetic flux 磁通量 electromagnetic induction 电磁感应 induced current 感应电流 electromotive force (emf) 电动势 induced emf 感应电动势 magnetic flux linkage 磁通链 motion electromotive force 动生电动势
Chapter 27 Electromagnetic Induction and faraday's law Introduction After Oersteds discovery in 1820: a steady current produced a steady magnetic field, experimentalists eagerly sought to demonstrate the reverse: a steady magnetic field could create a steady electric current. 1820年丹麦物理学家奥斯特发现了电流的磁效应, 就开始了其逆效应的研究
Chapter 27 Electromagnetic Induction and Faraday’s Law After Oersted’s discovery in 1820: a steady current produced a steady magnetic field, experimentalists eagerly sought to demonstrate the reverse: a steady magnetic field could create a steady electric current. 1820年丹麦物理学家奥斯特发现了电流的磁效应， 就开始了其逆效应的研究。 Introduction
Chapter 27 Electromagnetic Induction and faraday's law Michael Faraday, English physicist and chemist, whose experiments covered a wide range of electrical, magnetic, optical and chemical phenomena. He is best known for his discovery of electro-magnetic induction 2清 1831年8月英国物理学家 M. Faraday发现了电磁感应定律。大 大推动了电磁理论的发展。 电磁感应定律的发现,不但找到了磁生电的规律, 更重要的是它揭示了电和磁的联系,为电磁理论奠定了 基础。并且开辟了人类使用电能的道路。成为电磁理论 发展的第一个重要的里程碑
Chapter 27 Electromagnetic Induction and Faraday’s Law 电磁感应定律的发现，不但找到了磁生电的规律， 更重要的是它揭示了电和磁的联系，为电磁理论奠定了 基础。并且开辟了人类使用电能的道路。成为电磁理论 发展的第一个重要的里程碑。 1831 年 8 月 英 国 物 理 学 家 M.Faraday发现了电磁感应定律。大 大推动了电磁理论的发展。 Michael Faraday, English physicist and chemist, whose experiments covered a wide range of electrical, magnetic, optical and chemical phenomena. He is best known for his discovery of electro-magnetic induction
Chapter 27 Electromagnetic Induction and faraday's law 27-1. Induced EMF page629-630 1. Two experiments First experiment D)A current appears only if there is relative motion between the loop and the magnet; the current disappears when the relative motion between them ceases 导体回路和磁铁有相对运动时,回路中就会产生电流
Chapter 27 Electromagnetic Induction and Faraday’s Law 27-1. Induced EMF page629-630 1. Two experiments I N First experiment S 1) A current appears only if there is relative motion between the loop and the magnet; the current disappears when the relative motion between them ceases. 导体回路和磁铁有相对运动时, 回路中就会产生电流