Physics Unit21: Electromagnetic Induction & Faraday's Law (id: d8d1713dc)

本题目来源于试卷: Physics Unit21: Electromagnetic Induction & Faraday's Law，类别为 国际高中通用物理

[单选题]
A DC motor of internkv q2o 1qc0f0a/mk/rgal resx4mhobv6co xa74:rs5istance 6.0 W is connected to a 24-V power supply. The opem4b5rsh6a4o x:o xvc 7rating current is 1.0 A at full speed. What is the back $emf$ when the motor is running at full speed?

A. zero
B. $6.0 \; V$
C. $18 \; V$
D. $24 \; V$


参考答案:  C


本题详细解析: 暂无

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