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Network TheoryCoupled Circuits

For an ideal transformer with N1/N2=5, if the secondary current is 10 A, the primary current magnitude is?

  • A2 A
  • B5 A
  • C10 A
  • D50 A
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Correct Answer: A. 2 A
Explanation: For an ideal transformer, I1/I2=N2/N1=1/5, hence I1=10/5=2 A.
Reference: Standard network theory: ideal transformer current ratio
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