Rotating concentric coils

Please help in solving this problem.

I suppose you solved the first part. In order to simplify calculations in 2nd and 3rd parts, consider the small coil as a magnetic dipole.

4 лайка

Yeah, I was able to solve the first part. I-ll try the 2nd and 3rd using the assumption now… thank you!

3 лайка

Btw, where would you rate this task based on difficulty? It would help me in getting an idea.

I would say this is something that Irodov would include in his problem book

2 лайка

Ah i see

For the 3rd part you can also use a reciprocity theorem for mutual inductance. (M_{12} = M_{21})

3 лайка

Ah ok… I’ll take a note of that

I had one more doubt in another problem… let me make a new post for that

Thank you soo much…hehe i got it right somehow