Answer to Question #70308 in Electricity and Magnetism for himanshu

Question

1. Fringing decreases the flux density in the air gap. how?
2. Air-gap flux is termed as usefùl flux. Why?
3. The relative permeability of a magnetic material changes with flux density. Why?
4. Does a magnetic circuit consume energy? Why’?
5. In a magnetic circuit,which part (iron or air) requires most of the ampere-turns to set up flux, tell why ?
6. In all the magnetic circuits, leakage flux exists. Why?