负电荷的电势能是负数吗
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W(A->B)=E(A)-E(B)
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E(A)=W(A->B)\uff0c
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问题不清楚。应该这样说，负电荷长生电场中，带正电粒子的势能为负值，带正电粒子势能为正。绛旓細鐢靛娍鑳芥槸鐢靛娍宸骇鐢熺殑锛屽洜姝や笌鐢佃嵎鎬ц川涓嶇洿鎺ュ叧鑱斻傝礋鐢佃嵎涔熷彲浠ユ湁鏁寸殑鐢靛娍鑳姐備笉杩囧ソ鍍忕數鍔胯兘璇存湁姝ｈ礋锛岃繖绉嶆弿杩版湁闂鍚э紝鐢靛娍鑳藉簲璇ユ槸闈炶礋鏁銆備綘涓婇潰鐨勬剰鎬濊鎴愮數鍔挎洿鎭板綋浜
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