如何判断那个是负载，哪个是电源。。详解？？？ 电路原理如何判断哪个电源是负载？
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EAB=TON/T*E
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电流从元件的正极流向元件的负极，所以图b那个标有正负符号的圈圈是元器件（负载）。
第一个图中间有横线的圆为负载,没横线的为电源.
第二个图刚好相反,中间有横线的圆为电源,没横线的为负载.
按照电流流动的方向可以判断左图电压源为电源，右图电流源为电源。
标有正、负极的就是电源，负载是没有正负极之分的。
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绛旓細鍔熺巼涓烘鏄礋杞斤紝鍔熺巼涓鸿礋鏄數婧銆傜數婧怳鍜孖鐨勫疄闄呮柟鍚戠浉鍙嶏紝鐢垫祦浠"锛"绔祦鍑猴紝鍙戝嚭鍔熺巼銆傝礋杞経鍜孖鐨勫疄闄呮柟鍚戠浉鍚岋紝鐢垫祦浠"锛"绔祦鍏ワ紝鍙栫敤鍔熺巼銆傚湪鍒嗘瀽涓庤绠楃數璺椂锛屾椂甯稿彲浠绘剰閫夊畾鏌愪竴鏂瑰悜浣滀负鐢垫祦鐨勫弬鑰冩柟鍚戙傜數娴:姝ｇ數鑽疯繍鍔ㄦ柟鍚戔啋璐熺數鑽疯繍鍔ㄦ柟鍚戙傜數婧:楂樼數浣嶇鈫掍綆鐢典綅绔傜數婧愮數鍔ㄥ娍:浣庣數浣嶇...
