WeChat ID YouzimuTV Intro 欢迎订阅柚子木字幕组，每天精选6-8条YouTube热门视频！ 两组磁铁将电池的两极和铜线圈连接起来，这样电池，磁铁以及铜线圈就构成了回路，且回路中的电流正好在电池的周围产生了磁场。 坐等说永动机的孩纸 Author requires users to follow Official Account before leaving a comment Write a comment Write a comment Loading Most upvoted comments above Learn about writing a valuable comment Scan QR Code via WeChat to follow Official Account