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(1/4 + 1/2) * Va - Vb/2 = 2 + 12/2 ï¼èç¹ a æ¹ç¨ ã
(1/2 + 1/4) * Vb - Va/2 = - 5 - 12/2 ï¼èç¹ b æ¹ç¨ ã
解å¾ï¼
Va = 1.6 V
Vb = - 13.6 V
I1 = Va / 4 = 0.4 A
I2 = (Va - Vb - 12) / 2 = 1.6 A
I3 = Vb / 4 = - 3.4 A
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I1 + I2 = 2 ï¼èç¹ a ã
I2 - I3 = 5 ï¼èç¹ b ã
4I1 - 2I2 - 12 - 4I3 = 0 ï¼ä¸é´ç½å顺æ¶éç»è¡ä¸å ã