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 通用国际物理

[单选题]
A DC motor of internal resistance 6.0 o j2rsc tg24tfe )+hs-W isdqeda52t 1fmbsagkf.995.*g mp(t ;5wzj ruk connected to a 24-V power supply. The operating currenk d9.w (k*agasp1g.m9fj 5uftzbr tq ; m55de2t 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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