Chapter 27 Electromagnetic Induction and faraday's law 2)Faster motion produces a greater current. 3)The opposite moving direction causes an opposite current.(如果磁铁的运动方向相反,则产 生的电流方向相反) Magnet moves up Magnet toward moves down
Chapter 27 Electromagnetic Induction and Faraday’s Law 2) Faster motion produces a greater current. 3) The opposite moving direction causes an opposite current. (如果磁铁的运动方向相反, 则产 生的电流方向相反)
Chapter 27 Electromagnetic Induction and Faradays Law B变一→￠变 S变变
Chapter 27 Electromagnetic Induction and Faraday’s Law B变 变 S变 变
Chapter 27 Electromagnetic Induction and faraday's law Second experiment If we close(or open) switch to turn on a current in the right-hand loop, the meter suddenly and briefly registers a current in the left-hand loop Galvanometer Iron Switch Battery
Chapter 27 Electromagnetic Induction and Faraday’s Law Second experiment If we close (or open) switch to turn on a current in the right-hand loop, the meter suddenly and briefly registers a current in the left-hand loop
Chapter 27 Electromagnetic Induction and Faradays Law STTTTTTTTTTD> 0 L闭合电键‖L断开电鍵 变B变=变
Chapter 27 Electromagnetic Induction and Faraday’s Law I变 B变 变
Chapter 27 Electromagnetic Induction and faraday's law 2. Electromagnetic induction 分析上述几个实验,尽管在闭合回路中引起电流的 方式有所不同,但产生电流这一现象的共同原因是:当 穿过一个闭合导体回路所限定的面积的磁通Φ随时间发 生了变化。 1)电磁感应现象一穿过一个闭合回路的磁通量发生变 化时在回路中产生电流的现象 Electromagnetic induction: The process of producing the current and emf is called induction
Chapter 27 Electromagnetic Induction and Faraday’s Law 分析上述几个实验，尽管在闭合回路中引起电流的 方式有所不同，但产生电流这一现象的共同原因是：当 穿过一个闭合导体回路所限定的面积的磁通Φ随时间发 生了变化。 1) 电磁感应现象--穿过一个闭合回路的磁通量发生变 化时在回路中产生电流的现象. Electromagnetic induction: The process of producing the current and emf is called induction. 2. Electromagnetic induction