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批踢踢實業坊 Examination 板
 
[問題] 基本電學問題
Apr 13th 2015, 19:11, by a224742380

作者a224742380 (芭樂)

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標題[問題] 基本電學問題

時間Mon Apr 13 19:11:07 2015

1.每秒流經導體任一截面之電子數若為1.248個,相當於流過多少安培的電流? 2.某導線在磁場中的有效長度為2m,導線所在處磁通密度為0.2wb/m2,若導線係垂直於磁 場方向,且其上通過10A的電流,則導線受力多少牛頓? 3.有一線圈其砸數為100砸,電感為0.1H,弱有一直流10安培,於2秒內通過線圈且電流維 持在10安培不變,則穩定後線圈的感應電動勢為多少伏特? 4.電荷為3*10^-6庫倫之帶電體,以每秒10^4公尺之速度與磁場垂直方向運動,若磁場為2 *10^-3牛頓/安培米,則該電荷受力為多少牛頓? -- Sent from my Android -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 27.245.14.245 ※ 文章網址: https://www.ptt.cc/bbs/Examination/M.1428923469.A.A5C.html

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