一.复习目标：
1.会根据安培定则判断通电螺线管的南北极以及给螺线管供电电源的正负极；能根据要求绕制合适的螺线管。2.能够根据所给的电路图连接实物图以及由所给的实物图画出电路图。3.会正确连接家庭电路。                                                                                                                                                                                                                                                                                                                                                                                                                            
二.知识储备：
1.在电源的外部，电流从_____流出，从_________流入。
2.磁极间的相互作用规律是：________________________________________________。
3.磁体外部的磁感线都是从磁体的_________出发，回到_______。
4.安培定则的内容是：______________________________________________________。