单相半控桥式整流电路中，电阻串电感负载（无续流管），设负载电流为<img src="https://static.zxtiku.com/wangke/imgs/topic/4225b6a9ed1aa671815a78b8bb4484d4.jpg"/>,则流过每个晶闸管的电流有效值<img src="https://static.zxtiku.com/wangke/imgs/topic/4cbb979c3a63552d23ca4378bd42ab70.jpg"/>为（）。<br/> A、<img src="https://static.zxtiku.com/wangke/imgs/topic/85b2f89707004416c07e3826c9b0f0dd.jpg"/><br/> B、<img src="https://static.zxtiku.com/wangke/imgs/topic/4ca771a3ba3bb8349f928f64e98f6183.jpg"/><br/> C、<img src="https://static.zxtiku.com/wangke/imgs/topic/4225b6a9ed1aa671815a78b8bb4484d4.jpg"/><br/> D、<img src="https://static.zxtiku.com/wangke/imgs/topic/396972d3b04f2e693645fe9cd7914c49.jpg"/>