CUET and UG exam CUET UG 2025 Mock Test Series Physics Moving Charges and Magnetism Magnetic Force on a Current-Carrying Wire
The coercivity of a bar magnet is 140 A m-1. To demagnetize it, it is placed inside a solenoid of length 1.6 m and number of turns 112. What is the current flowing through the solenoid?
1
9 A
2
2.25 A
3
2 A
4
1.25 A