significance of coefficient of coupling between two coils
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The fraction of magnetic flux produced by the current in one coil that links with the other coil is called the coefficient of coupling between the two coils. It is denoted by (k). ... k=1, when the flux produced by one coil, completely links with the other coil and is called magnetically tightly coupled
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The greater the coefficient of coupling between the two coils, the greater the mutual inductance between them, and vice-versa. It can be expressed as the fraction of the magnetic flux produced by the current in one coil that links the other coil.
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