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【单选题】
一理想变压器的原、副线圈的匝数比为2∶1,在原、副线圈的回路中分别接有阻值相同的电阻,原线圈一侧接在电压为220 V的正弦交流电源上,如图所示。设副线圈回路中电阻两端的电压为U,原、副线圈回路中电阻消耗的功率的比值为k,则 ( )A.
U=88 V,k=
B.
U=22 V,k=
C.
U=88 V,k=
D.
U=22 V,k=
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