The B-H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside
Channel: Doubtnut
Date: 03/01/2020

The B-H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a long solenoid with `1000` turns/cm. The current that should be passed in the solenoid to demagnetise the ferromagnet completely is : ltimg src=\"https://d10lpgp6xz60nq.cloudfront.net/physics_images/JM_18_PHY_P3_E01_029_Q01.png\" width=\"80%\"gt