电子电工技术试题 用两种方法求解图中电流I

Question

急求在线等

Answer 1

Uab = 8 - 1 * 2 + 4 = 2V

Rab = 2Ω

I = Uab / (Rab + 2) = 0.5A

(1/2 + 1/2) * Va = 8/2 + 1 + 4/2

Va = 7V

I = (8 - Va) / 2 = 0.5A

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