、正方形线框边长为L、质量为m、电阻为R,线框的上半部 处于匀强磁场中,磁场的磁感应强、正方形线框边长为L、质量为m、电阻为R,线框的上半部处于匀强磁场中,磁场的磁感应强度按B=kt的规
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![、正方形线框边长为L、质量为m、电阻为R,线框的上半部 处于匀强磁场中,磁场的磁感应强、正方形线框边长为L、质量为m、电阻为R,线框的上半部处于匀强磁场中,磁场的磁感应强度按B=kt的规](/uploads/image/z/8310345-33-5.jpg?t=%E3%80%81%E6%AD%A3%E6%96%B9%E5%BD%A2%E7%BA%BF%E6%A1%86%E8%BE%B9%E9%95%BF%E4%B8%BAL%E3%80%81%E8%B4%A8%E9%87%8F%E4%B8%BAm%E3%80%81%E7%94%B5%E9%98%BB%E4%B8%BAR%2C%E7%BA%BF%E6%A1%86%E7%9A%84%E4%B8%8A%E5%8D%8A%E9%83%A8+%E5%A4%84%E4%BA%8E%E5%8C%80%E5%BC%BA%E7%A3%81%E5%9C%BA%E4%B8%AD%2C%E7%A3%81%E5%9C%BA%E7%9A%84%E7%A3%81%E6%84%9F%E5%BA%94%E5%BC%BA%E3%80%81%E6%AD%A3%E6%96%B9%E5%BD%A2%E7%BA%BF%E6%A1%86%E8%BE%B9%E9%95%BF%E4%B8%BAL%E3%80%81%E8%B4%A8%E9%87%8F%E4%B8%BAm%E3%80%81%E7%94%B5%E9%98%BB%E4%B8%BAR%2C%E7%BA%BF%E6%A1%86%E7%9A%84%E4%B8%8A%E5%8D%8A%E9%83%A8%E5%A4%84%E4%BA%8E%E5%8C%80%E5%BC%BA%E7%A3%81%E5%9C%BA%E4%B8%AD%2C%E7%A3%81%E5%9C%BA%E7%9A%84%E7%A3%81%E6%84%9F%E5%BA%94%E5%BC%BA%E5%BA%A6%E6%8C%89B%3Dkt%E7%9A%84%E8%A7%84)
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