电池电压相同时阻抗大好还是小好？ 一个电路中输入阻抗越大越好，输出阻抗越小越好 对不对？
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电池的内阻当然是越小越好，内阻小，则内耗少
肯定回答：电池内阻越低越好！外接负载要一越髙越好！否则就不能输出最大有功功率。
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