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
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
举一反三
- 磁场中某点的磁感应强度的方向（ ）Direction of magnetic flux density at a point is ( ) A: 放在该点的通电直导线所受的磁场力的方向The direction of the magnetic force on the current-carrying placed at this point B: 放在该点的正检验电荷所受的磁场力的方向The direction of the magnetic force on the positive charge placed at this point C: 放在该点的小磁针静止时N极所指的方向The direction of N pole when the small magnetic needle placed at this point is stationary D: 通过该点磁场线的切线方向Tangent direction of magnetic field line at this point
- The curl equation [img=154x44]1803a2a153c85f5.png[/img]shows that : A: The time-varying magnetic field can generate an electric field, in which the elecric field lines is closed around the magnetic field line. B: The time-varying magnetic field can generate a magneitc field, in which the magnetic field lines is closed around the electric field line. C: The magnetic field lines is closed themselves. D: Flux continuity
- The<br/>magnetic field lines are used to visually describe the distribution<br/>of the magnetic field around the magnet. For the following<br/>statement,( <br/>) is wrong. A: Each<br/>magnetic field line is a closed loop curve B: No<br/>two magnetic field lines can cross each other C: The<br/>length of the magnetic field line reflects the strength of the<br/>magnetic field D: The<br/>tangential direction of any point on any of the magnetic lines is the<br/>direction of the magnetic field at that point
- Magnetic Flux Density B is a vector. While Magnetic Field Intensity H is not a vector.
- 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]