[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fCqJ7PKG4ucBx0S9OYvwZihrXHH9YH_6DLXdYVSL9KQ0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":10,"question":16,"related":17,"source":27,"type":104},[],"2023-05-09 04:22:47",5396776,[8,9],"对","错",{"courseId":11,"courseImg":12,"courseName":13,"workId":14,"workName":15},"1000008058","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbff0b1545f7c6d1982379d4581004f93.jpg","大学物理（2-2）","3364825","大学物理（2-2）教程考试","若将放在电场中某点的试探电荷q 改为-q ,则该点的电场强度大小不变,方向与原来相反",[18,29,38,47,56,65,74,83,92,101],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],5282334,[22,23,24,25],"其电荷之间的距离远小于问题所涉及的距离的两个等量异号的点电荷系统","两个等量异号电荷组成的系统","一个正电荷和一个负电荷组成的系统","两个等量异号的点电荷组成的系统","关于电偶极子的概念其说法正确的是","v2",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],5294975,[33,34,35,36],"EA>EB>EC,UA>UB>UC","EA<EB<EC,UA<UB<UC","EA>EB>EC,UA<UB<UC","EA<EB<EC,UA>UB>UC","图中实线为某电场中的电场线,虚线表示等势面,由图可看出\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F0d5b31b9fcc7aafd8ebba5c96a711fc5.png\">",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],5344901,[42,43,44,45],"电场中某点场强的方向,就是将点电荷放在该点所受电场力的方向","在以点电荷为中心的球面上,由该点电荷所产生的场强处处相同","场强可由E=F\u002Fq定出,其中q为试验电荷,q可正、可负,F 为试验电荷所受的电场力","全部说法都不正确","下列几个说法中正确的是",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":28},[],5346031,[51,52,53,54],"P1和P2两点的位置","P1和P2两点处的电场强度的大小和方向","试验电荷所带电荷的正负","试验电荷的电荷大小","在已知静电场分布的条件下,任意两点P1和P2之间的电势差决定于",{"answer":57,"createTime":5,"id":58,"options":59,"question":64,"source":27,"type":28},[],5346821,[60,61,62,63],"F=0,M= 0","F= 0,M\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3f16d61bd9bd183a110ca896348e8849.png\">0","F\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb767f2a9898512e22d31a0e660e70a28.png\">0,M=0","F\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4e49a534e92346c2b8638c10dcd8cb47.png\">0,M\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc483253fb0befefa53f33ffea95436d2.png\">0","一电偶极子放在均匀电场中,当电偶极矩的方向与场强方向不一致时,其所受的合力F和合力矩M为",{"answer":66,"createTime":5,"id":67,"options":68,"question":73,"source":27,"type":28},[],5363311,[69,70,71,72],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F054a4933eff89b5468e12276f9d929ef.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F537a737cecd8cb9249ddcf04d7257701.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbe16d7cbb0d51cdaa46b8beec21bd2da.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F042fa16ee0edc20a148636fc34dbcacb.png\">","如图所示,两个同心的均匀带电球面,内球面带电荷Q1,外球面带电荷Q2,则在两球面之间、距离球心为r处的P点的场强大小E为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff39ed2b2733087fb34183d36933e60ad.png\">",{"answer":75,"createTime":5,"id":76,"options":77,"question":82,"source":27,"type":28},[],5363504,[78,79,80,81],"半径为R的均匀带负电球面","半径为R的均匀带负电球体","正点电荷","负点电荷","图中所示为一球对称性静电场的电势分布曲线,r表示离对称中心的距离.请指出该电场是由下列哪一种带电体产生的\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fdc5ebbfb3ad4b5ddc2d9c123bb5ffe2a.png\">",{"answer":84,"createTime":5,"id":85,"options":86,"question":91,"source":27,"type":28},[],5363716,[87,88,89,90],"\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F718859a6ade8328c8112528a4ee22919.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ffa41aa0c8f314818a93f5f8acb58e5f5.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbbf49c2619b79921c844f423bbbf4065.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fb017ba07a50f3f14cad4eb7b9f86323c.png\">","真空中一半径为R的球面均匀带电Q,在球心O处有一电荷为q的点电荷,如图所示.设无穷远处为电势零点,则在球内离球心O距离为r的P点处的电势为\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F32eb794f1d8779c31f097cd3866399a4.png\">",{"answer":93,"createTime":5,"id":94,"options":95,"question":100,"source":27,"type":28},[],5378420,[96,97,98,99],"高斯定理成立,且可用它求出闭合面上各点的场强","高斯定理成立,但不能用它求出闭合面上各点的场强","由于电介质不对称分布,高斯定理不成立","即使电介质对称分布,高斯定理也不成立","在一点电荷q产生的静电场中,一块电介质如图放置,以点电荷所在处为球心作一球形闭合面S,则对此球形闭合面\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F6455cee3c629a7db7748f026cd98d44f.png\">",{"answer":102,"createTime":5,"id":6,"options":103,"question":16,"source":27,"type":104},[],[8,9],3]