# Difference Between Self Inductance And Mutual Inductance Pdf

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23.05.2021 at 17:19

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*When a steady current flows in one coil as in the left illustration, a magnetic field is produced in the other coil. But since that magnetic field is not changing, Faraday's law tells us that there will be no induced voltage in the secondary coil.*

Swept Frequency Tech. Pulsed ET Tech. Self-Inductance and Inductive Reactance. The property of self-inductance is a particular form of electromagnetic induction.

## Difference between mutual and self induction

Thanks for visiting our website. Our aim is to help students learn subjects like physics, maths and science for students in school , college and those preparing for competitive exams. All right reserved. All material given in this website is a property of physicscatalyst. Mutual Inductance Table of Content Mutual Inductance Mutual Inductance of two co-axial solenoids Force between two long and parallel current carrying conductor Mutual Inductance Consider two coils 1 and 2 placed near each other as shown below in the figure Let coil 1 be the primary coil and coil 2 be secondary coil When current is primary coil changes w.

This way as a result of mutual inductance emf is induced in both the coils If I 1 is the current in primary coil at any instant ,than the emf induced in secondary coil would be proportional to the rate of change of current in primary coil i.

Where M is a constant known as coefficient of mutual induction and minus sign indicates that direction of induced emf is such that it opposes the change of current in primary coil Unit of mutual inductance is Henry We know that a magnetic flux is produced in primary coil due to the flow of current I 1.

If this is the magnetic flux associated with secondary coil then from faraday's law of EM induction ,emf induced in secondary coil would be comparing equation 24 and 25 we get Thus coefficient of mutual induction of secondary coil w. If I p is the current in the primary coil then magnetic field due to primary coil would be So flux through each turn of secondary coil would be where A is the area of cross-section of primary coil Total magnetic flux through secondary coil is Emf induced in secondary coil is Thus from equation 24 So Relation between Mutual inductance and self inductance Consider two coils of same length l and same area of cross-section placed near each other as shown below in the figure Let there are N 1 number of turns in primary coil and N 2 number of turns in secondary coil A current I 1 in the primary coil produces a magnetic field which in turns gives rise to flux?

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## Self induction and Mutual induction

The process in which a changing current in one coil induces emf in another coil, is called mutual induction. While the phenomenon in which a changing current in a coil induces an emf in itself is called self-induction. Consider two coils located near each other. The coil with the battery circuit is called the primary coil and the coil joined with the galvanometer circuit is called the secondary coil. The secondary coil within the magnetic field of the current-carrying primary coil.

## Inductance

Inductance is the property of a device that tells us how effectively it induces an emf in another device. In other words, it is a physical quantity that expresses the effectiveness of a given device. When two circuits carrying time-varying currents are close to one another, the magnetic flux through each circuit varies because of the changing current I in the other circuit.

In electromagnetism and electronics , inductance is the tendency of an electrical conductor to oppose a change in the electric current flowing through it. The flow of electric current creates a magnetic field around the conductor. The field strength depends on the magnitude of the current, and follows any changes in current. From Faraday's law of induction , any change in magnetic field through a circuit induces an electromotive force EMF voltage in the conductors, a process known as electromagnetic induction. This induced voltage created by the changing current has the effect of opposing the change in current.

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