高考物理(深化复习-命题热点提分)专题13-电学实验.doc
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高考物理(深化复习-命题热点提分)专题13-电学实验.doc
ideologicalandtheoreticalqualitiesandpracticalworkingability,andstrivetobuildacontingentofleaguecadreswithpositiveworkstyleandhighquality.Holdaregularmeetingofthepartysecretaryeveryfortnightly,arrangetheworkoftheregiment,feedbackthestudentinformation.Focu
高考物理(深化复习命题热点提分)专题13 电学实验-人教版高三全册物理试题.doc
专题13电学实验1.要测量某种合金的电阻率.图1(1)若合金丝长度为L,直径为D,阻值为R,则其电阻率ρ=______.用螺旋测微器测合金丝的直径如图1甲所示,读数为________mm.(2)图乙是测量合金丝阻值的原理图,S2是单刀双掷开关.根据原理图在图丙中将实物连线补充完整.(3)闭合S1,当S2处于位置a时,电压表和电流表的示数分别为U1=1.35V,I1=0.30A;当S2处于位置b时,电压表和电流表的示数分别为U2=0.92V,I2=0.32A.根据以上测量数据判断,当S2处于位置______
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