大学物理B问题如图示,直线MN长为2l,弧OCD是以N点为中心,l为半径的半圆弧,N点有正电荷+q,M点有负电荷-q.今将一试验电荷+q0从O点出发沿路径OCDP移到无穷远处,设无穷远处电势为零,则电场力作
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![大学物理B问题如图示,直线MN长为2l,弧OCD是以N点为中心,l为半径的半圆弧,N点有正电荷+q,M点有负电荷-q.今将一试验电荷+q0从O点出发沿路径OCDP移到无穷远处,设无穷远处电势为零,则电场力作](/uploads/image/z/6779632-40-2.jpg?t=%E5%A4%A7%E5%AD%A6%E7%89%A9%E7%90%86B%E9%97%AE%E9%A2%98%E5%A6%82%E5%9B%BE%E7%A4%BA%2C%E7%9B%B4%E7%BA%BFMN%E9%95%BF%E4%B8%BA2l%2C%E5%BC%A7OCD%E6%98%AF%E4%BB%A5N%E7%82%B9%E4%B8%BA%E4%B8%AD%E5%BF%83%2Cl%E4%B8%BA%E5%8D%8A%E5%BE%84%E7%9A%84%E5%8D%8A%E5%9C%86%E5%BC%A7%2CN%E7%82%B9%E6%9C%89%E6%AD%A3%E7%94%B5%E8%8D%B7%EF%BC%8Bq%2CM%E7%82%B9%E6%9C%89%E8%B4%9F%E7%94%B5%E8%8D%B7-q%EF%BC%8E%E4%BB%8A%E5%B0%86%E4%B8%80%E8%AF%95%E9%AA%8C%E7%94%B5%E8%8D%B7%2Bq0%E4%BB%8EO%E7%82%B9%E5%87%BA%E5%8F%91%E6%B2%BF%E8%B7%AF%E5%BE%84OCDP%E7%A7%BB%E5%88%B0%E6%97%A0%E7%A9%B7%E8%BF%9C%E5%A4%84%2C%E8%AE%BE%E6%97%A0%E7%A9%B7%E8%BF%9C%E5%A4%84%E7%94%B5%E5%8A%BF%E4%B8%BA%E9%9B%B6%2C%E5%88%99%E7%94%B5%E5%9C%BA%E5%8A%9B%E4%BD%9C)
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