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Comparison of high and low potential and the calculation of electric potential difference

(1 + = one by one == a 'one J ...: = a' l-3, 2ltan ~ 0) A (Ql /. + Q12 /. Tan) a (Ql2 / 3 + Ql..). . 6, electromagnetic induction in the calculation of potential difference. Example 8 shown in Figure 6 IA, the resistance per unit length p of the same specifications as the wire was made of side length n and b of the rectangular frame, wire frame in the vertical plane of a magnetic flux density increases by 2d3L2 · d3> o) changes in the law of uniform magnetic field, find the connected to the M, N between two ideal voltage table showing the number. Figure 6 A A B Figure 6 Analysis of a paper for the vertical magnetic field is enhanced inside, according to Lenz's law shows that, in the metal frame of the induced current will produce counter-clockwise,[link widoczny dla zalogowanych], which is the magnetic field changes the electric field, its effect is equivalent to countless number of small power series along the same direction, therefore, the circuit can be equivalent to as shown in Figure 6,[link widoczny dla zalogowanych], a B form. Volume 24 No. 278 overall 1O 2006 period (second half) things JournalVo1.24No. 278 (X) 10.2006.41. Induction seminar Yeh Feng, Jinhua High School Affiliated to South Bank study, Nanan District, Chongqing 400060, South Bank XI School, Chongqing 400063, Nanan District, middle school physics of electromagnetic induction is an important test center, many problems related to force and motion, momentum and energy, circuit and Ampere force and other aspects of knowledge, very complex. Therefore, by learning the part, you can drive on the front of each chapter review and application of knowledge will help enhance the comprehensive application of knowledge to analyze and solve problems. According to the proposition in recent years, trends and \current (b) of the induced current direction: Lenz's law and the right-hand rule used to determine (c) the size of induced emf: Faraday's law of electromagnetic induction: the size of electromotive force with the magnetic flux through the circuit is proportional to the rate of change. E A (, z number of turns (, z turn)) /. . it cuts the magnetic induction line motion: E-BlvsinO (B on the L, L, the angular and B) on the induced electromotive force formula: (1) in the Faraday law of electromagnetic induction electromotive force E in the el: (b - ' E2 one. r-n +2 b + c), r2: 』D (oral +2 c); and J the total one ab △ Bp (2a +2 b) At, so U I deleted a total r2 e2 a total of a J r. A e. One is connected to the M, N ideal voltage between two points Table showing the number. 7 Hall effect in the calculation of potential difference. Example 9 the cross-section of a × d of the rectangular piece of metal placed in uniform magnetic field, the magnetic flux density B in the direction perpendicular to the side piece of metal, when the piece of metal in the direction from left to right through to the current (Fig. 7), compare the piece of metal up and down the surface of M, N electric potential between two points in the level of Figure 7, and specifically Ming Huoer electric field strength with which factors. Analysis when the piece of metal in the direction from left to right through to the current, in its upper and lower sides of (M, N points) will arise between the electrical potential difference,[link widoczny dla zalogowanych], which in the current and the magnetic field perpendicular to the direction of conductor or Semiconductor transverse electric field between the sides of the phenomenon known as the Hall effect, is the Hall in 1879 by the American physicist, first discovered during the test, the copper foil. The charge is the amount set for the closure of sub-q, the number per unit volume is, z, according to current real meaning of the micro can write the formula I-nqsv (where s-a × d cross-sectional area for the piece of metal, for directional movement of the carrier rate). At this point if the formation of current carriers are positively charged,[link widoczny dla zalogowanych], the right-hand rule + q according to the direction of upward deflection of the plate, so that M>, which will be formed between the upper and lower sides of the additional electric field from top to bottom, the stable situation T dinga field with the carrier down on the electric force qE-q guide and up \. and if the formation of current carriers are negatively charged, negative charge is to the left of the plate will deflect upward,[link widoczny dla zalogowanych], resulting in>, but this time q is negative, so the formula still holds UMN an 1TD, which show that the Hall electric field of the electric field strength E \electrical properties of different sub-carrier nqs for the macro will produce different results. 'Chatter h h school education to discuss eT P Exploration Manager 0
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