电场中带负电粒子的动能和电势能总和为负数怎么理解 为什么负电荷形成的电场中正电荷具有的电势能为负，负电荷具有的...
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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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绛旓細绮掑瓙濡傛灉闄や簡鐢靛満鍔涗箣澶栧啀涓嶅彈鍏朵粬澶栧姏鎴栨病鏈夊叾瀹冨鍔涘仛鍔燂紝绮掑瓙鐢靛娍鑳鍜鍔ㄨ兘鐨勫拰鏄畾鍊硷紝淇濇寔涓嶅彉锛岀鍚堣兘閲忓畧鎭掑畾寰
绛旓細杩涘叆鍖寮鐢靛満,灏卞彈涓涓亽鍔汧 (F=EQ)鏃犺甯︾數绮掑瓙鏄杩樻槸璐,鍨傜洿鏂瑰悜閫熷害涓嶅彉,姘村钩鏂瑰悜閫熷害鍚戠數鍔垮噺灏忕殑鏂瑰悜澧炲姞,閫氫織鐨勮灏辨槸甯︽鐢电殑绮掑瓙鍚戠數鍦烘鏂瑰悜鍋忚浆,鍙嶄箣鍚戣礋 鍔ㄨ兘鏄剧劧澧炲姞,鍥犱负澶氫簡姘村钩閫熷害 鐢靛娍鑳鍑忓皬,鍥犱负绮掑瓙鍋氭鍔
