下图所示电路中，电流i的有效值为5A,的有效值为3A,则总电流的有效值为（）。 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32632' and id < 2594786 and id<>'2594786' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32632' and id > 2594786 and id<>'2594786' order by id asc limit 5