PhysicsEasy49×since 2003Q7637A 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 corecivity of the bar magnet is :A285 A/mB2600 A/mC520 A/mD1200 A/mCheck answerSkip