求磁通量时,什么时候用cos?什么鱼做联往深亚时候用sin ?用阿发乘sin 被它乘cos 我们设的阿发角是不是和磁感应强度平行的角 被它角是与磁感应强度垂直的角吗?
sincos不是绝对的根据角定定义:设在磁感应强度*B的匀强磁场中,有一个面积*S且与磁场方向垂直的平面,360问答磁感应强度B与面积S的乘积,叫做穿过这个平面的磁通量,简称磁通...
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无线电力传输目前取得重大突破,在日本展出了一种非接触式电源供来自应系统.这种系统基于电磁感应原理可无线传输电力.两个感应线圈...
答案(1)4m/s2(2喜汽侵艺般错操亲化备斤)10m/s(3)0.4绝广T方向垂直导轨平面某也得老束洲细易逐向上解析:(2)当金属棒下滑速度达到稳定时,电市溶买振船提盟阻R消耗...
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电磁学 半球面半径为R,均匀带点,电荷面密度为p,来自当其绕对称轴,以角速度w旋转时,求球心处的磁感应强度
一般《电磁学》的例题或习题都会给出如下结论:半径为b的圆形载流线圈在其轴线上的距离圆心为a的点上的磁感应强度B=(μ0/2)(Ibb)(aa+bb)^(-3/2)。旋转带电半球面...
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感应电动势与欧米茄的关系
楼主的“欧米茄”,是议袁名指线圈的转动角速率ω吗?1、感生电动势,inducedemf,计算方法有两种:一是用切割磁力线的概念理解,计算用ε=BLV公式;二是用磁通量的变化率概念...
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wB在物理中是什么意思
WB:磁通量。设在磁感应强度为B的匀强磁场中,有一个面积为S且与磁场方向垂直的平面,磁感应强度B与面积S的乘积,叫做穿过这个平面的磁通量,简称磁通。标量,符号章顶号屋“Φ”。定义...
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及奕之年是什么意思,急,懂行的来解释一下
磁通量,符号为Φ,是通过某给定曲面的磁场(亦称为磁通量密度)的大小的度量。磁通量的国际单位制单位是韦伯。定义:设在磁感应强度为B的匀强磁场中,有一个面积为S且与磁场方向垂直的平面...
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磁通量的含义?
定义:设在磁感应强度*B的匀强磁场中,有一个面积*S且与磁场方向垂直的平面,磁感应强际度B与面积S的乘积,叫做穿过这个平面的磁通量,简称磁通。公式:Φ=BS,适用条件是B与S平面...
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磁通量是表示穿过某一面积的磁感线条数吗?用强调垂直吗
通过某一平面的磁通量的大小,可以用通过这个平面的磁感线的条数的多少来形象地说明。在同一磁场中,磁感应强度越大的地方,磁感线越密。因此,B越大,S越大,磁通量就越大,意味着穿过这个...
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C.C.的简介
姓名:C.C.日文:シー・ツー(发音C-tsu)声优:野上尤加奈(ゆかな发音YUKANA)年龄:明(表面看16岁左右)360问答人种:人类(推测出生于公元5-8世纪西欧)飞室至食...
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OXO智能马桶有什么特点?
特点挺多的,比如省电节水、干净卫生、智能感应、座圈加热、自动清洗等,还有记忆功能,可以根据不同人的习惯进行功能记忆,总而言之就是很号宁反智能、很方便。
75kw电机需要多大的电线 是怎么选择的
1、75kw电机配50或70平方毫米的铜远紧湖鸡次权解电缆合适。2、电机模了映践毫快结马达。是指依据电磁感应定360问答律实现电能转换或传递的一种电磁装置。3、它的主要作用是产生...
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一个N匝矩形线圈,面积为S,在磁感强度为B的匀强磁场中以ω的角速度绕垂直磁感线的轴匀速转动,开始时线圈平面与磁场平行.对于它产生的交变电动势,下列判断正确的是( )A.瞬时表达式为e=NBSωsinωtB.有效值为*******.平均值为12NBSωD.频率为2πω
试题**:A、矩形线圈在磁感应强度为B的匀些练粉列聚仅皇探器强磁场中绕平行于磁场方向以角养积安各计门孔速度ω匀速转动,线圈内产生的是交流电,则产生电动势的最大值Em=nBSω,所...
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单相电能表棉衡黑烧怎么校准
验方法:补偿力矩调整:电能评材号房控研读乎表的电压线路加额定电压,调轻载调整装置,使铁指说吃药华怎转盘脱离防潜力拒作用时刚好不正转,把计度器和轴承中的摩擦力矩、电压铁芯倾斜、制造...
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