A doubt on self inductance and mutual inductance

[ayush123]

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.

 

[uart]

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.

 

[ayush123]

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.

 

[Born2bwire]

Self-induction always occurs. Mutual induction occurs when components are brought in close enough proximity to allow coupling.