A doubt on self inductance and mutual inductance

In summary, the conversation discusses the concept of mutual inductance and the relationship between changes in flux and induced emf in primary and secondary coils. The participants also mention the role of self-inductance and the necessity of close proximity for mutual induction to occur.
  • #1
ayush123
2
0
i am having a doubt that when we find a expression for mutual inductance we say that flux change in primary coil induces emf in secondary coil. but why change in flux doesn't induce any current in primary coil also.
 
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  • #2
ayush123 said:
i am having a doubt that when we find a expression for mutual inductance we say that flux change in primary coil induces emf in secondary coil. but why change in flux doesn't induce any current in primary coil also.

Who said it doesn't? It does. The voltage induced in the coil due to it's own flux is accounted for by it's self indictance while the voltage induced in another coil due to flux in the first is due to the mutual inductance.
 
  • #3
u mean that when both the primary and secondary coils are at close proximity then along with mutual induction self induction also occurs. am i right.
 
  • #4
Self-induction always occurs. Mutual induction occurs when components are brought in close enough proximity to allow coupling.
 

What is self inductance?

Self inductance is a property of a circuit that causes a change in the flow of current to induce a voltage in the same circuit.

How is self inductance measured?

Self inductance is measured in a unit called henries (H). It can be calculated by dividing the induced voltage by the rate of change of current.

What is mutual inductance?

Mutual inductance is a property of two separate circuits that causes a change in the flow of current in one circuit to induce a voltage in the other circuit.

What is the relationship between self inductance and mutual inductance?

Self inductance and mutual inductance are both related to the flow of current and the resulting voltage changes. However, self inductance is within a single circuit, while mutual inductance is between two separate circuits.

How can self inductance and mutual inductance affect circuit performance?

Both self inductance and mutual inductance can cause unwanted voltage changes in a circuit, which can lead to issues such as interference and inefficiency. They are important to consider in circuit design and can be managed by using proper shielding and designing for minimal inductance.

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