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='69474' and id < 4499593 and id<>'4499593' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69474' and id > 4499593 and id<>'4499593' order by id asc limit 5