如图实线为电场线,虚线为一个负电荷仅在电场力作用下的运动轨迹,a,b为轨迹上的两点,则如图实线为电场线,虚线为一个负电荷仅在电场力作用下的运动轨迹,a,b为轨迹上的两点,则:A 电荷在a
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![如图实线为电场线,虚线为一个负电荷仅在电场力作用下的运动轨迹,a,b为轨迹上的两点,则如图实线为电场线,虚线为一个负电荷仅在电场力作用下的运动轨迹,a,b为轨迹上的两点,则:A 电荷在a](/uploads/image/z/4924428-60-8.jpg?t=%E5%A6%82%E5%9B%BE%E5%AE%9E%E7%BA%BF%E4%B8%BA%E7%94%B5%E5%9C%BA%E7%BA%BF%2C%E8%99%9A%E7%BA%BF%E4%B8%BA%E4%B8%80%E4%B8%AA%E8%B4%9F%E7%94%B5%E8%8D%B7%E4%BB%85%E5%9C%A8%E7%94%B5%E5%9C%BA%E5%8A%9B%E4%BD%9C%E7%94%A8%E4%B8%8B%E7%9A%84%E8%BF%90%E5%8A%A8%E8%BD%A8%E8%BF%B9%2Ca%2Cb%E4%B8%BA%E8%BD%A8%E8%BF%B9%E4%B8%8A%E7%9A%84%E4%B8%A4%E7%82%B9%2C%E5%88%99%E5%A6%82%E5%9B%BE%E5%AE%9E%E7%BA%BF%E4%B8%BA%E7%94%B5%E5%9C%BA%E7%BA%BF%2C%E8%99%9A%E7%BA%BF%E4%B8%BA%E4%B8%80%E4%B8%AA%E8%B4%9F%E7%94%B5%E8%8D%B7%E4%BB%85%E5%9C%A8%E7%94%B5%E5%9C%BA%E5%8A%9B%E4%BD%9C%E7%94%A8%E4%B8%8B%E7%9A%84%E8%BF%90%E5%8A%A8%E8%BD%A8%E8%BF%B9%2Ca%2Cb%E4%B8%BA%E8%BD%A8%E8%BF%B9%E4%B8%8A%E7%9A%84%E4%B8%A4%E7%82%B9%2C%E5%88%99%EF%BC%9AA+%E7%94%B5%E8%8D%B7%E5%9C%A8a)
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