A laminated steel ring is wound with 200 turns. When the magnetizing current varies between 5 and 7 A, the magnetic flux varies between 760 and 800 Wb. Calculate the inductance of the coil.

A laminated steel ring is wound with 200 turns. When the magnetizing

1.	A laminated steel ring is wound with 200 turns. When the magnetizing current varies between 5 and 7 A, the magnetic flux varies between 760 and 800 Wb. Calculate the inductance of the coil.
A.	40H
B.	4 H
C.	4000H
D.	0.004 H
Answer» D. 0.004 H