问题
问答题
把连接电源的导线放在和磁针平行的位置上，当导线通电时，磁针会偏转一个角度，该实验表明电流周围存在______．发电机是根据______原理制造的．
答案
奥斯特实验说明电流的周围存在磁场；发电机的原理是电磁感应现象．
故答案为：磁场；电磁感应现象．
搜题请搜索小程序“爱下问搜题”
把连接电源的导线放在和磁针平行的位置上，当导线通电时，磁针会偏转一个角度，该实验表明电流周围存在______．发电机是根据______原理制造的．
奥斯特实验说明电流的周围存在磁场；发电机的原理是电磁感应现象．
故答案为：磁场；电磁感应现象．
用方框中单词或短语的适当形式完成下列句子，每个单词或短语只能使用一次。
小题2:It looks __________ it is going to rain before long. 小题3:I know you are busy and I don’t want to __________ too much of your time. 小题4:They __________ their tents and settled down for the night. 小题5:Christmas is one of the most important American __________, along with Easter and Thanksgiving. 小题6:She cannot be left to take care of the garden __________. 小题7:The club has grown __________ since it was founded in 2010. |