如图电路,已知R1=R4=1欧,R3=4欧,R2=R5=3欧,求电源两端等效电阻.答案好像是4/3R..class="ikqb_img" src="http://h.hiphotos.baidu.com/zhidao/wh%3D600%2C800/sign=45c241a5738da9774e7a8e2d8061d421/d000baa1cd11728b48420eb4c8fcc3cec3fd2c3c.j
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![如图电路,已知R1=R4=1欧,R3=4欧,R2=R5=3欧,求电源两端等效电阻.答案好像是4/3R..class=](/uploads/image/z/14489413-61-3.jpg?t=%E5%A6%82%E5%9B%BE%E7%94%B5%E8%B7%AF%2C%E5%B7%B2%E7%9F%A5R1%3DR4%3D1%E6%AC%A7%2CR3%3D4%E6%AC%A7%2CR2%3DR5%3D3%E6%AC%A7%2C%E6%B1%82%E7%94%B5%E6%BA%90%E4%B8%A4%E7%AB%AF%E7%AD%89%E6%95%88%E7%94%B5%E9%98%BB.%E7%AD%94%E6%A1%88%E5%A5%BD%E5%83%8F%E6%98%AF4%2F3R..class%3D%22ikqb_img%22+src%3D%22http%3A%2F%2Fh.hiphotos.baidu.com%2Fzhidao%2Fwh%253D600%252C800%2Fsign%3D45c241a5738da9774e7a8e2d8061d421%2Fd000baa1cd11728b48420eb4c8fcc3cec3fd2c3c.j)
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