Question

Which formula relates mutual inductance, coefficient of coupling, and the self-inductances of coil 1 and coil 2?

Options

• \[M=\frac{K}{\sqrt{L_1L_2}}\]

• \[M=\sqrt{\frac{L_1L_2}{K}}\]

• \[M=K\sqrt{L_1L_2}\]

• \[M=K(L_1+L_2)\]

Answer 1

Mutual inductance is the coefficient of coupling multiplied by the square root of the product of the two self-inductances. The relationship is \[M=K\sqrt{L_1L_2}\] .