(江西专用)2019中考物理新设计一轮复习第十二章认识电路习题.doc

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1第一部分 第十二章命题点 1 电荷 导体1(2017江西 5 题 2 分)如图所示,是部分不同物质的原子核对电子束缚能力强弱的排序图,毛皮与图中的梳子摩擦最容易起电,且它们摩擦后毛皮带正电(选填“正”或“负”)2(2014江西 11 题 3 分)如图所示,通草球甲、乙相互排斥,甲、丙相互吸引,如果已知甲带正电,那么乙、丙的带电情况是( D )A乙带负电、丙带正电B乙带正电、丙带正电C乙带负电、丙带负电或不带电D乙带正电、丙带负电或不带电命题点 2 电路的组成及连接方式3(2018江西 7 题 2 分)简单电路是由电源、用电器、开关和导线组成的,给充电宝充电时,充电宝相当于简单电路中的用电器 ;充电宝给手机充电时,充电宝相当于简单电路中的电源_4(2018江西 8 题 2 分)公路上,路灯的连接方式是并联;回到家中,按下开关,电灯亮了,开关与电灯的连接方式是串联5(2016江西 5 题 2 分)串联电路和并联电路是电学中的两种基本电路,通过你的观察,学校里的路灯是并联的,教室里的吊扇调速器与吊扇之间是串联的

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