magnetic field of a long wireFigure 3: Magnetic field of a long straight wire. (A) An end view, with the current flowing toward the reader. (B) A three-dimensional view. The expression for the magnetic fieldBa distancerfrom a long straight wire with currentiis ...
However, Ampere's law is applied to calculate the magnetic field of a long straight wire, and obtain the same result obtained with the law of Biot and Savart. To provide a picture and a qualitative understanding of the magnetic field, Faraday's interpretation of magnetic field lines is ...
Lines of the magnetic field produced by a long straight wire carrying a current are:A.radially inward toward the wireB.radially outward from the wireC.circles that are concentric with the wireD.in the direction of the current的答案是什么.用刷刷题APP,拍照
Its rotor produces a constant magnetic field, either from a direct current in its windings or by use of permanent magnets. The rotor’s magnetic field tends to align with the rotating field produced by the three-phase alternating currents in the stator. When operated on a fixed frequency ...
Magnetic fields arise from charges, similar to electric fields, but are different in that the charges must be moving. A long straight wire carrying a current is the simplest example of a moving charge that generates a magnetic field. The force a charge feels when moving through a magnetic ...
4 (a) A uniform magnetic fiel d has constant flux density B. A straight wire of fixe d length carries a current / at an angle to the magnetic field, as shown in Fig. 4.1.magnetic field flux density B current-carrying wire Fig.4.1The angle between the wire an d the magnetic fiel d...
4.Magnetic field Chapter4MagneticField §1Magnetism§2Biot-Savart-LaplaceLaw§3Gauss’Lawinmagnetism§4Ampère’sLaw§5MagneticForceonAnElectricCurrent§6MagneticForceonaMovingCharge Staticcharge Movingcharge Steadycurrent ElectricElectrostaticfieldfield Magnetic field Steadymagneticfield §1Magnetism(P580)Magnetic...
magnetic field.ppt Chapter29magneticfieldduetocurrents BiotandSavart’slaw(毕澳－萨伐尔定律)d vB 0 i d srrˆ 4r2 04107N/A2 permeabilityofvacuum 真空磁导率 BdB Themagneticfieldduetoacurrentinastraightwire 2 d vB 04 idsrrˆr2 dB 04 idssin r2 scot()cot R 1 dsRcsc2d ...
XV. A note on the magnetic field of a rectilinear circuit and the attraction of a straight wireThis paper presents a summary of all catch-comparison gear tests performed between 2002 and 2006 with Nordmre-type sorting grids in the Swedish Nephrops trawl fishery in the Skagerrak and Kattegat....
A student sets up an experiment with a straight wire carrying a current of 5 A. The current flows from the west to the east. Using the Right-Hand Rule, determine the direction of the magnetic field on the north side of the wire. ...