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Network TheoryCoupled Circuits

Two coils have mutual inductance M=0.2 H. If current in coil 1 changes at 5 A/s, the magnitude of the mutually induced voltage in coil 2 is?

  • A0.04 V
  • B0.2 V
  • C1 V
  • D25 V
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Correct Answer: C. 1 V
Explanation: The magnitude is |v2|=M|di1/dt|=0.2×5=1 V.
Reference: Standard network theory: mutual induced voltage numerical
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