小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com专题13电磁感应目录01电磁感应定律及其应用····································································2考向一法拉第电磁感应定律的应用·····························································································2考向二“三个定则、一个定律”的综合应用·············································································4考向三自感、涡流、电磁驱动和电磁阻尼·················································································502电磁感应定律及其应用····································································9考向一电磁感应中的图像问题·····································································································9考向二电磁感应中的电路问题···································································································11小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com01电磁感应定律及其应用考向一法拉第电磁感应定律的应用1．（2021·重庆·高考真题）某眼动仪可以根据其微型线圈在磁场中随眼球运动时所产生的电流来追踪眼球的运动。若该眼动仪线圈面积为S，匝数为N，处于磁感应强度为B的匀强磁场中，线圈平面最初平行于磁场，经过时间t后线圈平面逆时针转动至与磁场夹角为θ处，则在这段时间内，线圈中产生的平均感应电动势的大小和感应电流的方向（从左往右看）为（）A．，逆时针B．，逆时针C．，顺时针D．顺时针2．（2021·山东·高考真题）迷你系绳卫星在地球赤道正上方的电离层中，沿圆形轨道绕地飞行。系绳卫星由两子卫星组成，它们之间的导体绳沿地球半径方向，如图所示。在电池和感应电动势的共同作用下，导体绳中形成指向地心的电流，等效总电阻为r。导体绳所受的安培力克服大小为f的环境阻力，可使卫星保持在原轨道上。已知卫星离地平均高度为H，导体绳长为，地球半径为R，质量为M，轨道处磁感应强度大小为B，方向垂直于赤道平面。忽略地球自转的影响。据此可得，电池电动势为（）A．B．小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.comC．D．3．（2022·北京·高考真题）指南针是利用地磁场指示方向的装置，它的广泛使用促进了人们对地磁场的认识。现代科技可以实现对地磁场的精确测量。（1）如图1所示，两同学把一根长约10m的电线两端用其他导线连接一个电压表，迅速摇动这根电线。若电线中间位置的速度约10m/s，电压表的最大示数约2mV。粗略估算该处地磁场磁感应强度的大小B地；（2）如图2所示，一矩形金属薄片，其长为a，宽为b，厚为c。大小为I的恒定电流从电极P流入、从电极Q流出，当外加与薄片垂直的匀强磁场时，M、N两电极间产生的电压为U。已知薄片单位体积中导电的电子数为n，电子的电荷量为e。求磁感应强度的大小B；（3）假定（2）中的装置足够灵敏，可用来测量北京地区地磁场磁感应强度的大小和方向，请说明测量的思路。小学、初中、高中各种试卷真题知识归纳文案合同PPT等免费下载www.doc985.com4．（2023·湖南·校联考三模）一根带有绝缘皮的硬质长细导线顺次绕成如图所示的线圈，线圈中大圆、小圆在同一平面内且相切，其中大圆的面积为...