在如图所示的匀强磁场中，已经标出了电流I和磁场B以及磁场对电流作用力F三者的方向，其中错误的是（ ）In the uniform magnetic field as shown in the figure, the directions of current I and magnetic flux density B and the magnetic force on current F have been marked, and the wrong one is ( )
A: [img=77x76]18035646b26abf1.png[/img]
B: [img=72x74]18035646bd9ced2.png[/img]
C: [img=97x71]18035646c9326e7.png[/img]
D: [img=71x80]18035646d3b6dd2.png[/img]
A: [img=77x76]18035646b26abf1.png[/img]
B: [img=72x74]18035646bd9ced2.png[/img]
C: [img=97x71]18035646c9326e7.png[/img]
D: [img=71x80]18035646d3b6dd2.png[/img]
举一反三
- 在如图所示的匀强磁场中，已经标出了电流I和磁场B以及磁场对电流作用力F三者的方向，其中错误的是（ ） A: [img=77x76]180356443b464c6.png[/img] B: [img=72x74]1803564446f5fac.png[/img] C: [img=97x71]18035644521b5f8.png[/img] D: [img=71x80]180356445cfed5d.png[/img]
- A square current loop with length a on each side carries a current I. The loop is in a uniform magnetic field B. If the loop is in the stable equilibrium, the magnetic flux passing through the loop onlyby the uniform field is ( ). A: [img=30x22]1803a3748913c57.png[/img] B: 0 C: [img=44x24]1803a37490df0b1.png[/img] D: indeterminable
- 一个磁场的磁感线如图所示，将一个小磁针放入磁场中，则小磁针将( )The magnetic flux line of a magnetic field is as shown in the figure. If a small magnetic needle is put into the magnetic field, the small magnetic needle will ( )[img=162x83]18035646b23e320.png[/img] A: 向右移动 Move to the right B: 向左移动 Move to the left C: 顺时针转动Turn clockwise D: 逆时针转动turn anticlockwise
- 在图中，a表示垂直于纸面的一根导体的横截面，导体是闭合电路中的一部分，它在磁场中按如图所示的方向运动，其中不产生感应电流的是()In the figure, a is the cross section of a conductor perpendicular to the paper surface. The conductor is a part of the closed circuit. It moves in the direction shown in the figure in the magnetic field, which does not generate induced current( ) A: [img=88x103]180356419aaa1ed.png[/img] B: [img=90x100]18035641a58cdea.png[/img] C: [img=71x100]18035641b07f888.png[/img] D: [img=85x101]18035641bba2c61.png[/img]
- What is the net force on a magnetic dipole in a uniform magnetic field [img=14x24]1803a3749667c37.png[/img]? A: Nonzero and in the direction of [img=14x24]1803a3749f40258.png[/img]. B: Nonzero and in the direction of [img=28x26]1803a374a7784ea.png[/img]. C: Nonzero and perpendicular to [img=14x24]1803a3749f40258.png[/img].[img=14x24]1803a3749f40258.png[/img] D: zero.