JEE Main 15 Apr 2018 Shift 1 Solved Paper

Section: Physics

Question : 19 of 90

Marks: +1, -0

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 :

[Main 15 April 2018 S1]

1 mA
2 mA
20µA
40µA

Validate

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