如图8所示一根长为ab的导线用软线悬挂在磁感应强度为b的匀强磁场中电流方�由a�b此时悬线张力不为零欲使悬线张力为零必须 A．改变 Sketch Coloring Page

如图8所示一根长为ab的导线用软线悬挂在磁感应强度为b的匀强磁场中电流方�由a�b此时悬线张力不为零欲使悬线张力为零必须 A．改变 Template

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tomski如图8所示一根长为ab的导线用软线悬挂在磁感应强度为b的匀强磁场中电流方�由a�b此时悬线张力不为零欲使悬线张力为零必须 a．改变 coloring

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如图8所示一根长为AB的导线用软线悬挂在磁感应强度为B的匀强磁场中电流方�由A�B此时悬线张力不为零欲使悬线张力为零必须 A．改变 sketch template

如题图所示，在两平行载流的无限长直导线的平面内有一矩形线圈．大学搜题酱 sketch template

如图8所示一根长为AB的导线用软线悬挂在磁感应强度为B的匀强磁场中电流方�由A�B此时悬线张力不为零欲使悬线张力为零必须 A．改变 sketch template

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如图8所示一根长为AB的导线用软线悬挂在磁感应强度为B的匀强磁场中电流方�由A�B此时悬线张力不为零欲使悬线张力为零必须 A．改变 sketch template

如图所示，一根半径为R的无限长直铜导线，载有电流I，电流均匀分布在导线的横截面上。在导线内部通过中心轴作一横切面S，则通过横切面S上每单位长度 sketch template

如图甲所示条形磁铁放在水平桌面上在其左上方固定一根长直导线导线与磁铁垂直给导线通以垂直纸面�里的电流用FN表示磁铁对桌面的压力f sketch template

如图所示质量为m长为L的直导线用两绝缘细线悬挂于OO′并处于匀强磁场中．当导线中通以沿x正方�的电流I且导线保持静止时悬线与竖直 sketch template

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如图所示在倾角为37°的光�斜面上有一根长为04 M质量为6×10 2 Kg的通电直导线电流强度I＝1 A方�垂直于纸面�外导线用 sketch template

如图所示条形磁铁放在水平桌面上在其正中央上方固定一根长直导线导线与条形磁铁垂直．当导线中通以垂直纸面�里的电流时用FN表示磁铁对桌面的 sketch template

如图甲所示光�的水平桌面上固定着一根绝缘的长直导线可以自由移动的矩形导线框abcd靠�长直导线静止放在桌面上．从零时刻开始长直导线中的 sketch template

如图所示把一根包有绝缘层的导线绕在铁钉上把导线两端的绝缘层刮去接上干电池后铁钉 A有磁性 B会熔化 C有电流流过 D两端 sketch template

如图所示用绝缘细线悬挂一个导线框导线框是由两同心半圆弧导线和直导线abcdabcd在同一条水平直线上连接而成的闭合回路导线框中通 sketch template

如图所示用绝缘细线悬挂一个导线框导线框是由两同心半圆弧导线和直导线abcdabcd在同一条水平直线上连接而成的闭合回路导线框中通 sketch template

如图所示abcd为四根与纸面垂直的长直导线其横截面位于圆弧上相互垂直的两条直径的四个端点上导线中通有大小相同的电流方�见图．一带 sketch template

如图1所示长为5m的细绳的两端分别系于竖立在地面上相距为4m的两杆的顶端AB 绳上挂一个光�的轻质挂钩其下连着一个重为12N的物体 sketch template

如图一根长直导线abc在b点被弯成了直角若导线中通有电流I在ab延长线上距离b为r的P点处的磁感应强度B的大小为 自考生� sketch template

如图所示为水平放置的两根等高固定长直细导线的截面图O点是两导线间距离的中点ab是过O点的竖直线上与O点距离相等的两点两导线中通有大小 sketch template

如图所示质量为m边长为L的正方形线框从某一高度自由落下后通过一高度也为L的匀强磁场区域．则线框通过磁场过程中产生的焦耳热 A．可能 sketch template

如图所示竖直面内的正方形导线框ABCDabcd的边长均为l总电阻均为R质量分别为2m和m它们分别系在一跨过两个定�轮的轻绳两端在两 sketch template

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