A small square loop of wire l is placed inside a square loop of wire of side L(L>>l).The loops are co-planer and their centres coincide.The mutual inductance of the system is proportional to

A)l/L

B)L² /l

C)L/l

D) l² /L

please give me the complete and simple explanation to this answer...

Question

Grade 11Electromagnetic Induction

Mrinal Shingavi

14 Years agoGrade 11

Answer 1

$M_{12}=M_{21}$

So we can put current on any of the conductor.

We put I on bigger loop because on small loop its effect will be almost constant (since l<<L).

Now its easier to solve this.

Thanks & Regards

Arun Kumar

IIT Delhi

Askiitians Faculty