A bar magnet is demagnetized by inserting|EMI|JEE MAIN 2019

JEE Main 2019

9-01-2019 S1

Question

A bar magnet is demagnetized by inserting it inside a solenoid of length 0.2 m, 100 turns, and carrying a current of 5.2 A. The coercivity of the bar magnet is

Select the correct option:

520 A/m

2600 A/m

1200 A/m

285 A/m

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Physics

Medium

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