Mutual Inductance
Demo: current is induced in one coil when the current is changed in a neighboring coil
We can describe this effect quantitatively in terms of the mutual inductance, the ratio of flux through the loop to current in opposite loop.
- Note M has this symmetry (not obvious perhaps, but true)
- You can use M as you see L, the self inductance, in the development which follows.
Fab = flux through coil “a” due to current in coil “b”