电势电势能练习题

Pushingahead,East,North,Westdevelopment,facilitatingshanty,completexinchengWestRoad,stabilityandreconstructionofthestreet,StarDinggardenbuiltcenturyGardenDistrict,subjectpublichousingconstruction,heatingthegasexpansionacceleratedimplementation,JingRuiRiverandbridgestylelinesolidshaft,furtherexpandedthetowndevelopment.Beautifulcountryadheretotheadvanceandtypicalforagrouptolead.Accordingtoecologicallaybased,andindustryincreasedincome,andliveupgradecivilization,andculturerichconnotationofthought,caughtbuiltbeautifulvillage,andwholevillageadvance,andeasilyrelocation,andfivemodifiedthreebuilt,projectnear30a;depthintoecological,andindustry,andculture,andtourism,elements,highstandardscaughtpartyoriginalcityLiu,andjadeareXiaAO,modelvillage,inprovinceCitysethasbenchmark.Fourisequalbenefitstopromotesharing,coordinateddevelopmentofvarioussocialundertakings.Inthecaseofrigidspendingslowingrevenuegrowth,increase,financial75%tothepeople'slivelihood,themasseshavemoreaccessinthesharing.Cuobansomethinggoodandbenefit.Adheretotheaffordable,best,carefullycuobanvillageoil,waterandheat,cultural,cityandCountycolumnspractical,developmentsbenefitfamilies,bringmorewelfaretothemasses.Developmentofsocialconvenience.Acceptanceofbalanceddevelopmentofcompulsoryeducationthroughthenationalassessment,theCountyvocationaleducationcenterwasnamedtopSchoolofvocationaleducationinChina,thethirdbatchofnationalreformanddevelopmentmodelthroughprovincial...Fiveistodeepenreformandinnovationtobreakbottlenecksandendogenousdevelopmentofeffectivefire.Asanengineofdynamism,addingreformkeytoadoptingreformmeasuresstressenergyandbreakbottlenecksandpromotingdevelopment.Paycloseattentiontothekeyareasofreform.Conscientiouslyimplementtheprovincialdeploymentandcancel,adjustment,toundertaketheadministrativeapprovalitemsaccordingtoRegulation347tofurtherimproveadministrativeefficiencycontinuingdeepeningreformforpovertyalleviation,speedinguprurallandrightregistrationcertificationpilotproject,encouragingtheorderlytransferoflandmanagement,utilizethelandresources,inordertopromotescalemanagementlaidtheFoundation.Activelycultivatethemarket.Firmlyestablishamarket-oriented,nurturingfamilyfarms,industrialusers,professionalcooperationorganizationnewmarketmanagementmainbody456,effectivelyimprovetheindustry,intensiveandmarketizationofencouragingsupportsocialcapitalintothesmallmicro-credit,urbandevelopment,cultureandtourism,publicservicesandotherareas,easingdevelopmentshortfall.Topromotemassinnovation.Tosupporttheruralsectortousenewthinkingandnewideas,creativeworkincentivessuchasactivelypromotingfinancialintermediation,bringadded159innonpublicenterprises,individually-1540,createda中华民族是崇尚英雄、成就英雄、英雄辈出的民族。近代以来，一代代英雄儿女为民族复兴、国家富强奋勇抗争、抛头颅洒热血。没有他们，就没有现在的我们;没有他们，我们就不可能坐在明亮的教室里学习。电势、电势能练习题1．如图6－2－10所示，在一匀强电场区域中，有A、B、C、D四点恰好位于一平行四边形的四个顶点上，已知A、B、C三点电势分别为φA＝1V，φB＝4V，φC＝0，则D点电势φD的大小为()A．－3VB．0C．2VD．1V2．某电场的电场线分布如图6－2－11所示，以下说法正确的是()A．c点场强大于b点场强B．a点电势高于b点电势C．若将一试探电荷＋q由a点释放，它将沿电场线运动到b点D．若在d点再固定一点电荷－Q，将一试探电荷＋q由a移至b的过程中，电势能减小3．如图6－2－12中虚线表示等势面，相邻两等势面间的电势差相等，有一带正电的小球在电场中运动，实线表示该小球的运动轨迹．小球在a点的动能等于20eV，运动到b点时的动能等于2eV.若取c点为零势点，则当这个带电小球的电势能等于－6eV时(不计重力和空气阻力)，它的动能等于()A．16eVB．14eVC．6eVD．4eV4．如图6－2－13所示，绝缘杆两端固定带电小球A和B，轻杆处于水平向右的匀强电场中，不考虑两球之间的相互作用．初始时杆与电场线垂直，将杆右移的同时顺时针转过90°，发现A、B两球电势能之和不变，根据如图给出的位置关系，下列说法正确的是()A．A一定带正电，B一定带负电B．A、B两球带电量的绝对值之比qA∶qB＝1∶2C．A球电势能一定增加D．电场力对A球和B球都不做功5．三个点电荷电场的电场线分布如图6－2－15所示，图中a、b两点处的场强大小分别为Ea、Eb，电势分别为φa、φb，则()A．Ea＞Eb，φa＞φbB．Ea＜Eb，φa＜φbC．Ea＞Eb，φa＜φbD．Ea＜Eb，φa＞φb6．在静电场中，将一正电荷从a点移到b点，电场力做了负功，则()A．b点的电场强度一定比a点大B．电场线方向一定从b指向aC．b点的电势一定比a点高D．该电荷的动能一定减小Pushingahead,East,North,Westdevelopment,facilitatingshanty,completexinchengWestRoad,stabilityandreconstructionofthestreet,StarDinggardenbuiltcenturyGardenDistrict,subjectpublichousingconstruction,heatingthegasexpansionacceleratedimplementation,JingRuiRiverandbridgestylelinesolidshaft,furtherexpandedthetowndevelopment.Beautifulcountryadheretotheadvanceandtypicalforagrouptolead.Accordingtoecologicallaybased,andindustryincreasedincome,andliveupgradecivilization,andculturerichconnotationofthought,caughtbuiltbeautifulvillage,andwholevillageadvance,andeasilyrelocation,andfivemodifiedthreebuilt,projectnear30a;depthintoecological,andindustry,andculture,andtourism,elements,highstandardscaughtpartyoriginalcityLiu,andjadeareXiaAO,modelvillage,inprovinceCitysethasbenchmark.Fourisequalbenefitstopromotesharing,coordinateddevelopmentofvarioussocialundertakings.Inthecaseofrigidspendingslowingrevenuegrowth,increase,financial75%tothepeople'slivelihood,themasseshavemoreaccessinthesharing.Cuobansomethinggoodandbenefit.Adheretotheaffordable,best,carefullycuobanvillageoil,waterandheat,cultural,cityandCountycolumnspractical,developmentsbenefitfamilies,bringmorewelfaretothemasses.Developmentofsocialconvenience.Acceptanceofbalanceddevelopmentofcompulsoryeducationthroughthenationalassessment,theCountyvocationaleducationcenterwasnamedtopSchoolofvocationaleducationinChina,thethirdbatchofnationalreformanddevelopmentmodelthroughprovincial...Fiveistodeepenreformandinnovati