下图所示电路，则电流i的有效值为（）A。 

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32635' and id < 2595027 and id<>'2595027' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32635' and id > 2595027 and id<>'2595027' order by id asc limit 5