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物理
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请画出伏安法测电阻的电路图.
人气:111 ℃ 时间:2019-10-09 04:40:01
解答
电压表与电阻并联,电流表与电阻串联,注意电表的正负接线柱的连接;滑动变阻器按一上一下的原则串联在电路中,如图:
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