将一只阻值为几十千欧的电阻R1和一只阻值为几欧的电阻R2并联起来

 将一只阻值为几十千欧的电阻R1和一只阻值为几欧的电阻R2并联起来,则总电阻(        )

A.很接近R1而略大于R1            B.很接近R1而略小于R1

C.很接近R2而略大于R2            D.很接近R2而略小于R2

 

答案

 D

 

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