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通电导线在磁场中受到的力

> 如图所示，有一磁感强度B=0.5T的水平匀强磁场，垂直匀强磁场放置一很长的金属框架，框架上有一导体ab保持与框架边垂直、由静止开始下滑．已知ab长10cm，质量为0.1kg，电阻为0.1Ω，框架电阻及摩擦不计，取g=10m/s 2．求： (1)导体ab下落的最大加速度和最大速度； (2)导体ab在最大速度时产生的电功率．

问题：

发布时间：2024-09-07

如图所示，有一磁感强度B=0.5T的水平匀强磁场，垂直匀强磁场放置一很长的金属框架，框架上有一导体ab保持与框架边垂直、由静止开始下滑．已知ab长10cm，质量为0.1kg，电阻为0.1Ω，框架电阻及摩擦不计，取g=10m/s ²．求：

(1)导体ab下落的最大加速度和最大速度；
(2)导体ab在最大速度时产生的电功率．

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