Calculate the number of turns in an inductor with a ferromagnetic core when the inductance is 4000 H, the current changes from 5A to 7A and the flux changes from 760 to 800 Wb.

Calculate the number of turns in an inductor with a ferromagnetic cor

1.	Calculate the number of turns in an inductor with a ferromagnetic core when the inductance is 4000 H, the current changes from 5A to 7A and the flux changes from 760 to 800 Wb.
A.	100
B.	200
C.	300
D.	400
Answer» C. 300