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Network TheoryCoupled Circuits

For two coupled inductors, the maximum physically possible mutual inductance magnitude is?

  • AL1+L2
  • Bsqrt(L1L2)
  • CL1L2
  • D|L1-L2|
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Correct Answer: B. sqrt(L1L2)
Explanation: Since |k|<=1 and M=k sqrt(L1L2), the maximum magnitude of M is sqrt(L1L2).
Reference: Standard network theory: mutual inductance limit
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