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 internal resistance 6.0 W is conn4 p2/oi dg5uibyq 34kpected u-3fe sai,rsys n9z1j y 6f 6pb*9dj/cto a 24-V power supply. The operating curzs66u* ns jsb,-9iyac3pd/e19 yf fjrrent 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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