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Two coils having self-inductances of 10 mH and 40 mH are mutually coupled. What is the maximum possible mutual inductance?
  • a)
    40 mH
  • b)
    20 mH
  • c)
    5 mH
  • d)
    10 mH
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Two coils having self-inductances of 10 mH and 40 mH are mutually coup...
Concept:
The mutual inductance is given by:
where, M = Mutual inductance
L = Self-inductance
k = Coefficient of coupling
The value of k lies between 0 and 1.
The maximum value of mutual inductance is possible for k = 1.
Calculation:
Given, L1 = 10 mH
L2 = 40 mH
M = 20 mH
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Two coils having self-inductances of 10 mH and 40 mH are mutually coupled. What is the maximum possible mutual inductance?a)40 mHb)20 mHc)5 mHd)10 mHCorrect answer is option 'B'. Can you explain this answer?
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