磁场:1.如图所示,两根相互平行的长直导线分别通有方向相反的电流I1和I2,且I1>I2;a、b、c、d为导线某一横截面所在平面内的四点,且a、b、c与两导线共面;b点在两导线之间,b、d的连线与导线
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![磁场:1.如图所示,两根相互平行的长直导线分别通有方向相反的电流I1和I2,且I1>I2;a、b、c、d为导线某一横截面所在平面内的四点,且a、b、c与两导线共面;b点在两导线之间,b、d的连线与导线](/uploads/image/z/6204485-29-5.jpg?t=%E7%A3%81%E5%9C%BA%EF%BC%9A1.%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E4%B8%A4%E6%A0%B9%E7%9B%B8%E4%BA%92%E5%B9%B3%E8%A1%8C%E7%9A%84%E9%95%BF%E7%9B%B4%E5%AF%BC%E7%BA%BF%E5%88%86%E5%88%AB%E9%80%9A%E6%9C%89%E6%96%B9%E5%90%91%E7%9B%B8%E5%8F%8D%E7%9A%84%E7%94%B5%E6%B5%81I1%E5%92%8CI2%2C%E4%B8%94I1%3EI2%3Ba%E3%80%81b%E3%80%81c%E3%80%81d%E4%B8%BA%E5%AF%BC%E7%BA%BF%E6%9F%90%E4%B8%80%E6%A8%AA%E6%88%AA%E9%9D%A2%E6%89%80%E5%9C%A8%E5%B9%B3%E9%9D%A2%E5%86%85%E7%9A%84%E5%9B%9B%E7%82%B9%2C%E4%B8%94a%E3%80%81b%E3%80%81c%E4%B8%8E%E4%B8%A4%E5%AF%BC%E7%BA%BF%E5%85%B1%E9%9D%A2%EF%BC%9Bb%E7%82%B9%E5%9C%A8%E4%B8%A4%E5%AF%BC%E7%BA%BF%E4%B9%8B%E9%97%B4%2Cb%E3%80%81d%E7%9A%84%E8%BF%9E%E7%BA%BF%E4%B8%8E%E5%AF%BC%E7%BA%BF)
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