Electricity and Circuits: Resistor (id: 6b859cbb4)

本题目来源于试卷: Electricity and Circuits: Resistor，类别为 美国物理杯赛(Physics Bowl)

[单选题]
98.20: Wire I and wire II are made of thpydesjw x0n 2e.s8; /ae same matjgp) b;k -fl6rpje- z-erial. Wire II has twice the diameter and twice the length of I. If I has resistance R, II has resistance6jz kperg--- );bjflp

A. $R/8$
B. $R/4$
C. $R/2$
D. $R$
E. $2R$


参考答案:  C


本题详细解析: 暂无

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