p{font-size:10.5pt;line-height:150%;margin:0;padding:0;}td{font-size:10.5pt;}(09年汕

09年汕头市一模)两电阻R1R2的电流I随电压U变化的关系图线如图所示,其中R1的图线与纵轴的夹角和R2的图线与横轴的夹角都是θ30º.若将R1R2串联起来接入电路中,则通电后R1R2消耗的电功率之比P1P2等于

A1           B3                             

C13               D31   

答案

答案C

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