Enter the inductance of 2 inductors and the coupling coefficient into the calculator to determine the mutual inductance.

Mutual Inductance Formula

The following equation is used to calculate the mutual inductance between 2 inductors.

I = k * Sqrt ( L1 * L2 )

I is the mutual inductance
k is the coupling coefficient
L1 is one inductance
L2 is another inductance

To calculate the mutual inductance, multiply the coupling coefficient by the square root of the product of both inductance values.

Mutual Inductance Definition

Mutual inductance is the total inductance between two coupled inductors.

Mutual Inductance Example

How to calculate mutual inductance?

First, determine the coupling coefficient.
Determine the coupling coefficient between the two inductors.
Next, determine the first inductance.
Calculate the inductance of the first inductor.
Next, determine the second inductance.
Calculate the inductance of the second inductor.
Finally, calculate the mutual inductance.
Calculate the mutual inductance using the equation above.

FAQ

What factors affect the mutual inductance between two inductors?

Mutual inductance is affected by factors such as the distance between the two inductors, their orientation relative to each other, the core material, and the shape and size of the inductors.

How can the coupling coefficient be optimized in a circuit?

The coupling coefficient can be optimized by adjusting the physical distance between the inductors, using core materials with higher magnetic permeability, and carefully designing the geometry of the inductors to maximize the magnetic field overlap.

Can mutual inductance be negative, and what does it signify?

Yes, mutual inductance can be negative, which signifies that the magnetic fields of the two inductors oppose each other. This can happen due to the orientation of the inductors or the direction of current flow in them.

Mutual Inductance Calculator