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If the efficiency of a transformer is 100%, which of the following equations would be...

Physics
WAEC 2019

If the efficiency of a transformer is 100%, which of the following equations would be correct? 
 

  • A. N\(_p\)E\(_p\) = N\(_s\)E\(_s\)
  • B. N\(_s\)I\(_p\)= N\(_p\)I\(_s\)
  • C. N\(_s\)I\(_s\) = N\(_p\)I\(_p\)
  • D. I\(_p\)E\(_s\) = I\(_s\)E\(_p\)
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Correct Answer: Option D
Explanation

For a transformer with 100% efficiency, the input power equals the output power:

E\(_p\)​I\(_p\) ​= E\(_s\)​I\(_s\)​

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