两个阻值相同的电阻器串联后的等效电阻与并联后的等效电阻之比就是( ) - 查题网

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两个阻值相同的电阻器串联后的等效电阻与并联后的等效电阻之比就是( )

A、
4:1
B、
1:4
C、
1:2
D、
2:1

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电工电子技术

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