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磁场对电流的作用力 PowerPoint PPT Presentation


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磁场对电流的作用力. 通电导线在磁场中受的力称为安培力. 一、安培力. 本节主要讨论: 安培力的方向、安培力的大小和磁电式电流表原理. 同时改变电流和磁场方向. 受力方向. 安培力方向. 交换磁极位置. 受力方向. 改变. 演示实验 :. 改变电流方向. 受力方向. 改变. 不变. 通电导线在磁场中所受安培力 F 的方向,与电流 I 、磁感应强度 B 的方向都有关,且 F 与 B 、 I 都垂直.

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磁场对电流的作用力

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