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滑动变阻器的用法以及电路图（电流表）的连接

2025-03-27 12:33:16

推荐回答（2个）

回答1：

被测电阻允许通过的电流较小时，滑动变阻器使用限流式；这样是为了保护电路。
当被测电阻远远小于电压表电阻时，使用外接法；
当被测电阻远远大于电流表电阻时，使用内接法；
这样可以减小测量误差。

回答2：

你想先外接就外接，内接一样。滑动变阻器，怎样用按需要，按照电路图接。
Good luck.

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