The BH curve for a ferromagnetic material is shown in the Figure. The material is placed inside a long solenoid which contains 1000 turns/cm. The current that should be passed in the solenoid to demagnetize the ferromagnet completely is
A. 1.00 mA
B. 1.25 mA
C. 1.50 mA
D. 1.75 mA
Answer:C
The BH curve for a ferromagnetic material is shown in the Figure. The material is placed inside a long solenoid which contains 1000 turns/cm. The current that should be passed in the solenoid to demagnetize the ferromagnet completely is
A. 1.00 mA B. 1.25 mA C. 1.50 mA D. 1.75 mA