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 ki5wbov * u0.et. g ft;daq56q1-nmua resi* :t zu.ia ;wm 5tvv*6shnpya+stance 6.0 W is connected to a 24-V power supply. The operatiai:tza6+su.nt *p v 5yv*h;mwng 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

微信扫一扫，分享更方便