However, in both the cases, the flux through a coil is proportional to the
current That is,  FB a I Further, if the geometry of the coil does not vary with time then,
d
d
d
d
B
I
t
t
Φ
∝
For a closely wound coil of N turns, the same magnetic flux is linked
with all the turns When the flux FB through the coil changes, each turn
contributes to the induced emf