Faraday's law of electromagnetic induction

Abstract: the Faraday's law of electromagnetic induction information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Faraday law of electromagnetic induction formula: e = delta/delta t; And the method to get an electromotive force: e = BLV, it is the definition of special deduction, application of this formula, the magnetic flux change in the closing coil is conductor rod cutting motion, is Faraday electromagnetic induction. More flow meter manufacturers choose model price quote you are welcome to inquire, Faraday's law of electromagnetic induction is the article details below. Faraday's law of electromagnetic induction formula: e = delta & Phi; /△t; And the method to get an electromotive force: e = BLV, it is the definition of special deduction, application of this formula, the magnetic flux change in the closing coil is conductor rod cutting motion, Faraday's law of electromagnetic induction is concluded. What is the law of electromagnetic induction law of electromagnetic induction is also called the Faraday's law of electromagnetic induction, electromagnetic induction phenomenon refers to the phenomenon by magnetic flux changes induced electromotive force, for example, part of the closed circuit conductor in magnetic field cutting of magnetic induction line movement, creates an electric current from a conductor, the current is called inductive current, the electromotive force ( Voltage) Referred to as the induced electromotive force. Law of electromagnetic induction electromotive force in the direction of the lenz's law or right-hand rule to determine. Content of the right-hand rule: extend deuce right hand thumb and four refers to the vertical, palm toward the N pole of the magnetic field, the direction of the thumb is consistent with the direction of motion of the conductor, has pointed out the direction of the four fingers is the direction of the induced current in the conductor ( The direction of induction electromotive force and inductive current in the same direction) 。 Lenz's law, points out that the induced current magnetic field to hinder the change of the original magnetic flux. In short, magnetic flux, the current has a tendency to let its decrescent. And the current generated by the magnetic flux decreases, has a tendency to make it bigger. Electromagnetic induction law who discovered Faraday discovered the law of electromagnetic induction, nearly 30 years of high school physics teaching, the textbook used by also writes, is Faraday discovered the law of electromagnetic induction. And ordinary high school curriculum standard experiment textbook o 'clock on April 3rd edition in 2010 wrote page 15, Newman ( F。 E. 诺依曼,1798本; 1895). , weber ( W。 E. 韦伯,1804本; — 1891). After strict analysis of theory and experiment data, successively in 1845 and 1846, points out that the size of the induced electromotive force in the closed circuit, and through this a circuit is directly proportional to the rate of change of the magnetic flux, the posterity is called Faraday's law of electromagnetic induction. That is to say, the author in the high school, college and high school physics teaching in science of the materials used for the discoverer of the law of electromagnetic induction speak wrong. So, who discovered the law of electromagnetic induction? To answer this question clearly, must make clear the Faraday ( MichaelFaraday, 1791本; — 1867). , lenz ( HeinrichFriedrichEmilLenz1804— — 1865). Newman, weber's contribution to the electromagnetic induction. Electromagnetic induction law of the development process of 1, an overview of Faraday's law was originally a law based on the observation of experiment. Was later formalised, limited version of its partial derivative, with other laws of electromagnetism is modern his saide version of maxwell's equations. Faraday's law of electromagnetic induction, which is based on Faraday experiment in 1831. The effect was Joseph & middot; Henry found at about the same time, but time Faraday's published earlier. See maxwell's discussion of electromotive force of the original. Founded in 1834 by the Baltic German scientist heinrich & middot; Lenz found lenz's law, to provide the direction of the induced electromotive force, and generate the current direction of induction electromotive force. 2, some questions in 1820 H. C。 Oster found after magnetic current, many physicists will try to find the inverse effect, it puts forward the magnetic can generate electricity, magnetic effect on electrical problems. 3, Faraday's law of electromagnetic induction study 1822 D. F。 J。 O la's and A. Von Humboldt when measuring geomagnetic intensity, accidentally discovered metal near the magnetic oscillation damping effects. In 1824, o la copper plate experiment was done according to this phenomenon, found that turning copper plate can drive of free hanging above the needle rotation, but the rotation of the magnetic needle with copper plates are not synchronized. Slightly lagging, electromagnetic damping and electromagnetic drive is the earliest discovered electromagnetic induction phenomenon, but since there is no direct expression is induced current, was not. 4, Faraday electromagnetic induction law is put forward in August 1831, Faraday, respectively, on both sides of soft iron ring around the two coils, one for the closed loop, the parallel wires near the bottom place a needle, the other is connected to a battery, switch, form a closed loop of power supply. It was found that closed switch, magnetic deflection; Disconnecting switch, needle reversed deflection, which indicates that in the absence of the battery pack of the induced current in coil. Faraday immediately realized that this is a kind of unsteady transient effects. Then he made dozens of experiments, the induced current situation summarized as five types: change of current, magnetic field changes, the movement of the constant current, the movement of the magnets, movement of the conductor in magnetic field, and put these phenomena, officially named as electromagnetic induction.

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