简答题:<br /> <img src="http://www.weimei168.com/uploads/202208/20130108162095669566.jpg" alt="" border="0" /><br /> <img src="http://www.weimei168.com/uploads/202208/20130108162016901690.jpg" alt="" border="0" /><br /> (1)电流表的读数变化了多少?<br /> (2)电压表的读数变化了多少?