The co-efficient of coupling between two air core coils depends on____________?
Correct answer: C. mutual inductance and self inductance of two coils
- A. self-inductance of two coils only
- B. mutual inductance between two coils only
- C. mutual inductance and self inductance of two coils
- D. none of the above
Explanation
The coefficient of coupling is k = M/√(L₁L₂), so it depends on mutual inductance and the self-inductances of both coils. Considering either mutual or self-inductance alone is incomplete.
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