gc textbook chapter 18 Electric Currents (id: e51d853d4)

本题目来源于试卷: gc textbook chapter 18 Electric Currents，类别为 IB物理学

[填空题]
Calculate the ratio of the resistance of 1h0ktcyr u9m + y6un.nywi b0060.0 m of aqyz v2 4 :gi9cg zspf0452ijjzluminum wire 2.0 mm in diameter, to 20.0 jp sz:z2qfci z4g4g9052yij vm of copper wire 2.5 mm in diameter.   

参考答案: 1.2±2%


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