如图dgjc0029所示，三个电路的等效电阻关系为(____)。图<img alt="/upload/photos/20190626/7d85dacb156e423e9a72e3bc8bad6a99.png" src="/upload/photos/20190626/7d85dacb156e423e9a72e3bc8bad6a99.png" />
A三个都相等
B图b和图c的等效电阻相等，且和a不等
C图c的等效电阻最小
D图c的等效电阻最大
相关试题
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如图dgjc0029所示，三个电路的等效电阻关系为(____)。图<img alt=/upload/photos/20190626/7d85dacb156e423e9a72e3bc8bad6a9
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于图dgjc0065电路，描述正确的有(____)。图<img alt=/upload/photos/20190626/e6b7663aafd84fccb9feaf8747bafbd8.png
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根据表格（图dgjc05）数据画出的该直流电阻的伏安特性曲线如图dgjc06所示，其直流电阻的伏安关系是(____)。图<img alt=/upload/photos/20190626/f70f
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如图dgjc0032所示，ELA灯与ELB灯电阻相同，当电阻器滑动片向下滑动时，(____)。图<img alt=/upload/photos/20190626/12b4d6a6f49d4e3
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如图dgjc0031所示，当开关S打开时(____)。图<img alt=/upload/photos/20190626/be8051a390c448dfa7c565fbd8d1948e.png