本题目来源于试卷: Physics Unit18: Electric Currents，类别为 通用国际物理
[单选题]
A heavy bus bar is 20 cm long and of recta.3 mqz e pr*ls3rc+l6tngular cros +6n+lijsq udoe aj ir67:k.,as-section, 1.0 cm x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resiaisr,q+o6 u . 7ajl+n: i6jedkstivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)
A. $0.67 \; V$
B. $0.34 \; V$
C. $0.067 \; V$
D. $0.034 \; V$
参考答案: C
本题详细解析:
暂无
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