已知元件吸收的功率为P＝-50W，在关联参考方向下，电压为5V,则电流为（　）A。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68466' and id < 4420823 and id<>'4420823' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68466' and id > 4420823 and id<>'4420823' order by id asc limit 5