電磁學問題

 

大家都熟悉的變壓器電壓比關係

但這關係是滿足一些條件才成立的。以下是香港高中常採用的三套課本所列出的條件：

 

Advanced Physics for Hong Kong Volume Third Edition P.285

Tom Duncan

  • the primary resistance and current are small
  • very little flux escapes from the core, and
  • the secondary current is small

Further Physics Volume 2 Third Edition P.156

>Fung, Sun & Young

(a) Perfect flux linkage

(b) Open circuit, i.e. negligible current is drawn.

Physics Beyond 2000 Second Edition P.368

Raymond Chan

 ..... there is no leakage of flux and no coil resistance, ..........

 

除了 "no flux lekage" 是大家相同的，其他的都略有不同。問它們是否只是字眼上差異，意思是相同的？

 

 

 

 

 

 

 

 

 

 

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自21/9/03的訪客