电动机与电动机效应
Motors & the Motor Effect
解释电动机效应是通电导体在磁场中受到力这一现象，并说明该原理如何应用于电动机和扬声器中。
Explain the motor effect as the force on a current-carrying conductor in a magnetic field, and describe how this principle is used in electric motors and loudspeakers
学习证据 / Evidence
- 解释载流导体在磁场中会受到力的作用，即电动机效应。
- 预测反转电流方向或磁场方向会如何影响力的方向。
- 描述电动机效应在电动机和扬声器中的应用。
- Explains that a current-carrying conductor in a magnetic field experiences a force (the motor effect)
- Predicts how reversing the current or reversing the magnetic field affects the direction of the force
- Describes how the motor effect is applied in an electric motor and in a loudspeaker
评估问题 / Assessment
如果{{name}}观察一台电动机内部或扬声器背面，他们能否解释线圈为什么会移动——如果反转电流方向，运动又会发生什么变化？
If {{name}} looked inside an electric motor or the back of a loudspeaker, could they explain why the coil of wire moves — and what would happen to the movement if you reversed the direction of the current?