在某点放正检验电荷时场强与放负电荷检验电荷时场强方向相反
错的还是对的
人气：237 ℃ 时间：2019-12-01 11:26:21
解答
错的,某点的场强是唯一确定的,于放如其中的试探电荷的正负无关,若为正的则场强与试探电荷受力方向相同,负的则相反.
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