- #1
Alex Farraday
- 4
- 0
Hello everyone, I'm not sure if the title makes sense, but I'll try to explain it a bit better here. So, if we have a transformer with an open iron core (U shaped iron core, with coils wrapped around each side, same number of coils, same thickness), why is the electromagnetically induced emf in the second coil weaker than when there is a closed iron core (O with corners shaped)? I think it's because magnetic field permeates the iron core better than the air, but please explain if I'm wrong.
The iron core I was talking about: http://oi62.tinypic.com/2q8st90.jpg
First time it's open (weaker induced emf), and then we close it (a lot stronger induced emf).
The iron core I was talking about: http://oi62.tinypic.com/2q8st90.jpg
First time it's open (weaker induced emf), and then we close it (a lot stronger induced emf).