介绍了用转轮方式演示载流导线在磁场中受力的原理和演示方法。
The principle and method to demonstrate the force on a current-carrying wire in magnetic field with revolving wheel are introduced.
讨论有电磁感应时，载流导线在磁场中的运动规律及磁力对载流导线所作的功。
The moving law of a current-carrying wire in magnetic field and the work done by magnetic force for it are discussed.
磁场中的高斯定理和安培环路定理；安培定律。磁场对载流导线和载流线圈及对运动电荷的作用。
Gauss theorem in magnetic field and Ampere cycle theorem, Ampere law, action of magnetic field to current line, cycle and charge in which.
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