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        1. 如圖5所示,兩個(gè)線圈套在同一個(gè)鐵芯上,線圈的繞向在圖中已經(jīng)標(biāo)出。左線圈連著平行導(dǎo)軌M和N,導(dǎo)軌電阻不計(jì),在導(dǎo)軌垂直方向上放著金屬棒ab,金屬棒處在垂直于紙面向外的勻強(qiáng)磁場(chǎng)中。下列說(shuō)法中正確的是(  )                                                                 

          A.當(dāng)金屬棒ab向右勻速運(yùn)動(dòng)時(shí),a點(diǎn)電勢(shì)高于b點(diǎn),c點(diǎn)電勢(shì)高于d點(diǎn)
          B.當(dāng)金屬棒ab向右勻速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),c點(diǎn)與d點(diǎn)等電勢(shì)
          C.當(dāng)金屬棒ab向右加速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),c點(diǎn)電勢(shì)高于d點(diǎn)
          D.當(dāng)金屬棒ab向右加速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),d點(diǎn)電勢(shì)高于c點(diǎn)

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          如圖5所示,兩個(gè)線圈套在同一個(gè)鐵芯上,線圈的繞向在圖中已經(jīng)標(biāo)出。左線圈連著平行導(dǎo)軌M和N,導(dǎo)軌電阻不計(jì),在導(dǎo)軌垂直方向上放著金屬棒ab,金屬棒處在垂直于紙面向外的勻強(qiáng)磁場(chǎng)中。下列說(shuō)法中正確的是(  )                                                                 

          A.當(dāng)金屬棒ab向右勻速運(yùn)動(dòng)時(shí),a點(diǎn)電勢(shì)高于b點(diǎn),c點(diǎn)電勢(shì)高于d點(diǎn)

          B.當(dāng)金屬棒ab向右勻速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),c點(diǎn)與d點(diǎn)等電勢(shì)

          C.當(dāng)金屬棒ab向右加速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),c點(diǎn)電勢(shì)高于d點(diǎn)

          D.當(dāng)金屬棒ab向右加速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),d點(diǎn)電勢(shì)高于c點(diǎn)

           

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          如圖5所示,兩個(gè)線圈套在同一個(gè)鐵芯上,線圈的繞向在圖中已經(jīng)標(biāo)出。左線圈連著平行導(dǎo)軌M和N,導(dǎo)軌電阻不計(jì),在導(dǎo)軌垂直方向上放著金屬棒ab,金屬棒處在垂直于紙面向外的勻強(qiáng)磁場(chǎng)中。下列說(shuō)法中正確的是(  )                                                                  

          A.當(dāng)金屬棒ab向右勻速運(yùn)動(dòng)時(shí),a點(diǎn)電勢(shì)高于b點(diǎn),c點(diǎn)電勢(shì)高于d點(diǎn)

          B.當(dāng)金屬棒ab向右勻速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),c點(diǎn)與d點(diǎn)等電勢(shì)

          C.當(dāng)金屬棒ab向右加速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),c點(diǎn)電勢(shì)高于d點(diǎn)

          D.當(dāng)金屬棒ab向右加速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),d點(diǎn)電勢(shì)高于c點(diǎn)

           

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          科目:高中物理 來(lái)源:2010-2011學(xué)年杭州七校聯(lián)考高二第二學(xué)期期中考試物理試卷(解析版) 題型:選擇題

          如圖5所示,兩個(gè)線圈套在同一個(gè)鐵芯上,線圈的繞向在圖中已經(jīng)標(biāo)出。左線圈連著平行導(dǎo)軌M和N,導(dǎo)軌電阻不計(jì),在導(dǎo)軌垂直方向上放著金屬棒ab,金屬棒處在垂直于紙面向外的勻強(qiáng)磁場(chǎng)中。下列說(shuō)法中正確的是(  )                                                                  

          A.當(dāng)金屬棒ab向右勻速運(yùn)動(dòng)時(shí),a點(diǎn)電勢(shì)高于b點(diǎn),c點(diǎn)電勢(shì)高于d點(diǎn)

          B.當(dāng)金屬棒ab向右勻速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),c點(diǎn)與d點(diǎn)等電勢(shì)

          C.當(dāng)金屬棒ab向右加速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),c點(diǎn)電勢(shì)高于d點(diǎn)

          D.當(dāng)金屬棒ab向右加速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),d點(diǎn)電勢(shì)高于c點(diǎn)

           

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          如圖5所示,兩個(gè)線圈套在同一個(gè)鐵芯上,線圈的繞向在圖中已經(jīng)標(biāo)出。左線圈連著平行導(dǎo)軌M和N,導(dǎo)軌電阻不計(jì),在導(dǎo)軌垂直方向上放著金屬棒ab,金屬棒處在垂直于紙面向外的勻強(qiáng)磁場(chǎng)中。下列說(shuō)法中正確的是                                                                 


          1. A.
            當(dāng)金屬棒ab向右勻速運(yùn)動(dòng)時(shí),a點(diǎn)電勢(shì)高于b點(diǎn),c點(diǎn)電勢(shì)高于d點(diǎn)
          2. B.
            當(dāng)金屬棒ab向右勻速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),c點(diǎn)與d點(diǎn)等電勢(shì)
          3. C.
            當(dāng)金屬棒ab向右加速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),c點(diǎn)電勢(shì)高于d點(diǎn)
          4. D.
            當(dāng)金屬棒ab向右加速運(yùn)動(dòng)時(shí),b點(diǎn)電勢(shì)高于a點(diǎn),d點(diǎn)電勢(shì)高于c點(diǎn)

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