一理想变压器,原、副线圈的匝数比为4:1。原线圈接在一个交流电

一理想变压器,原、副线圈的匝数比为41。原线圈接在一个交流电源上,交变电压随时间变化的变化规律如图所示。副线圈所接的负载电阻是11Ω。则下列说法中不正确的是

                       

A.原线圈交变电流的频率为50Hz

       B.变压器输入、输出功率之比为41

       C.副线圈输出电压为55V

       D.流过副线圈的电流是5A

答案

B

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