Particulate Nature of Matter B.5 Electric Circuits (id: d4192f067)

本题目来源于试卷: Particulate Nature of Matter B.5 Electric Circuits，类别为 IB物理学

[单选题]
An electric motor lifts containers through 7gej 8qaj9ce( a verticadwc(d3v *s is8;f/us4zd ld rum*5q; el distance of 330$m$. Each container weighs 200$N$ and takes 60 seconds to lift.
If the motor operates at 100$V$ and has an efficiency of 40%, what current must be delivered to the motor?

A. 0.25A
B. 0.4A
C. 1.0A
D. 2.5A


参考答案:  D


本题详细解析:

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