The direction of the magnetic field around a straight current-carrying wire is given by which rule? A. Left-hand rule B. Right-hand rule C. Fleming's left-hand rule D. Fleming's right-hand rule 相关知识点: 试题来源: 解析 B。本题考查磁学中的定则。右手定则用于判断直导线周围磁场的方向...
The direction of the magnetic field around a current - carrying conductor can be determined by _. A. Ohm's law B. Ampere's right - hand rule C. Coulomb's law D. Faraday's law 相关知识点: 试题来源: 解析 B。解析:安培右手定则可以用来确定载流导体周围磁场的方向。A选项欧姆定律是关于...
In an electromagnetic field, the direction of the magnetic field is perpendicular to the direction of the electric field. If the electric field points north, the magnetic field cannot point ___. A. east B. south C. west D. north 相关知识点: 试题...
placing many compasses indicates the direction of the magnetic field at any point. To draw magnetic field lines, connect the compass "dots." The advantage of this method is that it shows the direction of magnetic field lines. The disadvantage is that it doesn...
In a magnetic field, a compass needle always points in the direction of ___. A. the north pole of the magnet B. the south pole of the magnet C. east D. west 相关知识点: 试题来源: 解析 A。指南针在磁场中总是指向磁体的北极。选项 B 是磁体的南极,指南针指向的是北极;选项 C 和 D ...
Magnetic compass electronic engineering which has an inclined sensing device and two magnetic field sensor three, the direction of the geomagnetic field that might be disturbed (57) by the current materials and magnetic firmly fixed to the Abstract apparatus Methods for measuring using is provided. ...
The direction of the induced current in a conductor moving in a magnetic field can be determined by: A. Fleming's left-hand rule B. Fleming's right-hand rule Coulomb's law D. Ohm's law 相关知识点: 试题来源: 解析 B。本题考查判断感应电流方向的规则。选项 A“Fleming's left-hand rul...
This paper presents a new method which can not only measure the magnitude but also the direction of the magnetic field. A structure with a cantilever driven in different modes is used. The magnetic field direction and magnitude are detected by measuring the vibration amplitudes of the different ...
magnetic line of force- a line of force in a magnetic field field line,line of force- an imaginary line in a field of force; direction of the line at any point is the direction of the force at that point Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton Univer...
13 The diagram shows the direction of the Earth's magnetic field over a region of the Earth where the magnetic flux density is 4.4 × 103T. The magnetic field in a vertical plane,acts at 65°to the horizontal.(a)Calculate the magnitude of the vertical component of the Earth's magnetic ...