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- #Magnetic Effects of Current and Magnetism
The coercivity of a small bar magnet is 4 x 103Amp/m. It is inserted inside a solenoid of 500 turns and length 1 m to demagnetize it. The amount of current to be passed through the solenoid will be.
Option: 1
2.5 A
Option: 2
5 A
Option: 3
8 A
Option: 4
10 A
Answers (1)
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