如图所示一正点电荷在电场中受电场力作用沿一圆弧的圆周ab运动,已知该点电荷的电荷量为q,质量为m,重力不计,ab弧长为l,电荷经过a、b两点时速度大小均为v0,则判断a、b两点场强大小关系.题
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![如图所示一正点电荷在电场中受电场力作用沿一圆弧的圆周ab运动,已知该点电荷的电荷量为q,质量为m,重力不计,ab弧长为l,电荷经过a、b两点时速度大小均为v0,则判断a、b两点场强大小关系.题](/uploads/image/z/1481123-11-3.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%E4%B8%80%E6%AD%A3%E7%82%B9%E7%94%B5%E8%8D%B7%E5%9C%A8%E7%94%B5%E5%9C%BA%E4%B8%AD%E5%8F%97%E7%94%B5%E5%9C%BA%E5%8A%9B%E4%BD%9C%E7%94%A8%E6%B2%BF%E4%B8%80%E5%9C%86%E5%BC%A7%E7%9A%84%E5%9C%86%E5%91%A8ab%E8%BF%90%E5%8A%A8%2C%E5%B7%B2%E7%9F%A5%E8%AF%A5%E7%82%B9%E7%94%B5%E8%8D%B7%E7%9A%84%E7%94%B5%E8%8D%B7%E9%87%8F%E4%B8%BAq%2C%E8%B4%A8%E9%87%8F%E4%B8%BAm%2C%E9%87%8D%E5%8A%9B%E4%B8%8D%E8%AE%A1%2Cab%E5%BC%A7%E9%95%BF%E4%B8%BAl%2C%E7%94%B5%E8%8D%B7%E7%BB%8F%E8%BF%87a%E3%80%81b%E4%B8%A4%E7%82%B9%E6%97%B6%E9%80%9F%E5%BA%A6%E5%A4%A7%E5%B0%8F%E5%9D%87%E4%B8%BAv0%2C%E5%88%99%E5%88%A4%E6%96%ADa%E3%80%81b%E4%B8%A4%E7%82%B9%E5%9C%BA%E5%BC%BA%E5%A4%A7%E5%B0%8F%E5%85%B3%E7%B3%BB.%E9%A2%98)
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