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1、欧姆定律单元测试题一（参考答案）DIV.MyFav_1299810836259 P.MsoNormalTEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10pt; MARGIN: 0cm 0cm 0pt 0.05pt; LINE-HEIGHT: 18.25pt; FONT-FAMILY: Times New Roman; TEXT-ALIGN: justifyDIV.MyFav_1299810836259 LI.MsoNormalTEXT-JUSTIFY: inter-ideograph; FONT-SIZE: 10pt; MARGIN: 0cm 0cm 0p
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8、836259 DIV.Section1page: Section1DIV.MyFav_1299810836259 OLMARGIN-BOTTOM: 0cmDIV.MyFav_1299810836259 ULMARGIN-BOTTOM: 0cm一、选择1C 2B 3A 4D 5A 6B 7C 8B 9B 10A 11A 12D 13D 14B 15A 16B 17A 18D二、填空1变小 变小 变大 2大 长度 301A 2V 4 5 51：1 3：2 610 1A 10 715V 15A 818 12V 9 2：5 5：3 10不变 不变 变大 11 5：3三、作图与实验探究1（1）123456电压U/V电流I/A减小实验误差（2） 如图所示。R1断路或R2断路或R1、R2同时断路或电流表短路2（1）如图所示。（2）实验原理：R=实验步骤：用电流表首先测出通过RX中的电流IX；闭合S后测出通过RX与R0的电流之和I(4) RX3（1）（2） 16 032 （3） 5四、计算题1R1=20 R2=30 R3=10 2 02A 4V 3（1） R1=15 R2=30 （2）U乙=9V