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Coefficient of Coupling K
Автор: Physics (11th and 12th) by Er GK Singh
Загружено: 2025-07-08
Просмотров: 1168
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Coefficient of Coupling K
Coefficient of Coupling (k):
Definition:
The coefficient of coupling (k) measures how effectively two inductors (coils) are magnetically linked.
Formula:
k = M / √(L₁ × L₂)
Where:
M = Mutual inductance
L₁ = Self-inductance of coil 1
L₂ = Self-inductance of coil 2
Range:
0 ≤ k ≤ 1
k = 1 → Perfect coupling (100% magnetic linkage)
k = 0 → No coupling (0% magnetic linkage)
Meaning:
Higher k means stronger magnetic linkage between coils.
Lower k means weaker magnetic linkage.
Applications:
Transformers
Wireless charging
Inductive sensors
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