What Is Mutual Inductance?

Charlotte Miller

Are you curious to know what is mutual inductance? You have come to the right place as I am going to tell you everything about mutual inductance in a very simple explanation. Without further discussion let’s begin to know what is mutual inductance?

In the realm of physics and electromagnetism, mutual inductance stands as a fascinating phenomenon governing the interaction between two coils. This detailed exploration aims to demystify mutual inductance, covering its definition, formula, derivation, and its significance in the world of electromagnetic induction.

What Is Mutual Inductance?

Mutual inductance is a fundamental concept in electromagnetism that describes the extent to which a change in current flowing through one coil induces an electromotive force (EMF) or voltage in an adjacent coil. It signifies the interaction and influence of one coil’s magnetic field on the other.

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What Is Mutual Inductance Class 12?

In Class 12 physics curriculum, students delve into the intricacies of mutual inductance as part of their study of electromagnetic induction. This education introduces them to the principles and applications of mutual inductance in electromagnetic systems.

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What Is Mutual Inductance In Physics?

In the realm of physics, mutual inductance is a phenomenon observed when two coils are in close proximity, and a change in current in one coil induces a voltage in the other. This interaction is governed by the magnetic fields generated by the flow of electric current.

What Is Mutual Inductance Formula?

The formula for mutual inductance (M) is expressed as:

M= N2⋅Φ21/I1


  • M is the mutual inductance.
  • N2 is the number of turns in the second coil.
  • Φ21is the magnetic flux linked with the second coil due to the current in the first coil.
  • I1 is the current flowing through the first coil.

What Is Self-Inductance?

Self-inductance is a related concept that refers to the ability of a coil to induce an EMF in itself when there is a change in current flowing through it. While mutual inductance involves two coils influencing each other, self-inductance focuses on a single coil’s interaction with itself.

What Is Mutual Inductance Pdf?

Understanding mutual inductance is facilitated through resources such as PDF documents that provide comprehensive explanations, derivations, and examples. These resources are often valuable for students and enthusiasts seeking in-depth knowledge on the subject.

Define Mutual Inductance And Its S.I. Unit

  • Definition: Mutual inductance is defined as the ratio of the induced EMF in one coil to the rate of change of current in another coil.
  • S.I. Unit: The unit of mutual inductance is the Henry (H), named after Joseph Henry, and is denoted by the symbol H.

Si Unit Of Mutual Inductance

The SI unit of mutual inductance is the Henry (H). One Henry is equivalent to one volt-second per ampere (V⋅s/A).

Mutual Inductance Derivation Class 12

In Class 12 physics studies, the derivation of mutual inductance involves mathematical expressions and concepts related to magnetic flux, number of turns, and current. The process usually includes the application of Faraday’s Law of electromagnetic induction.


In conclusion, mutual inductance is a fundamental concept in physics and electromagnetism, revealing the interconnectedness of coils and their magnetic fields. As students and enthusiasts explore the principles, formula, and applications of mutual inductance, they gain valuable insights into the intricate world of electromagnetic induction. This understanding forms the basis for the development of various technologies and devices that rely on the principles of mutual inductance, making it a cornerstone in the field of electrical engineering and physics.


What Do You Mean By Mutual Inductance?

When two coils are brought in proximity to each other, the magnetic field in one of the coils tends to link with the other. This further leads to the generation of voltage in the second coil. This property of a coil which affects or changes the current and voltage in a secondary coil is called mutual inductance.

What Is Self And Mutual Inductance?

Mutual inductance is simply the generation of an induced EMF in a coil as a result of current flowing in an adjacent coil. In self-inductance, changes in the flow of current in a coil are opposed by the coil itself by inducing an EMF in the same coil, i.e., no other coil is involved.

What Is Mutual Inductance In A Transformer?

Mutual induction is the ability of an inductor in one circuit to induce a voltage in another circuit. When a transformer primary has alternating current flowing in the conductor, magnetic flux surrounds the conductor in proportion to the amount of the current.

Why Is Mutual Inductance Positive?

There is no reason for a mutual inductance to be positive, all depends on relative orientations of the conductors and on prescribed directions of currents. For example, on the top picture a current in the left coil will create a positive magnetic flux in the right coil, thus the mutual inductance is positive.

I Have Covered All The Following Queries And Topics In The Above Article

What Is Mutual Inductance Class 12

What Is Mutual Inductance In Physics

What Is Mutual Inductance Formula

What Is Self-Inductance

What Is Mutual Inductance Pdf

Define Mutual Inductance And Its S.I. Unit

Si Unit Of Mutual Inductance

Mutual Inductance Derivation Class 12

What Is Mutual Inductance