Question
The current required to be passed through a solenoid of 15 cm length and 60 turns in order of demagnetise a bar magnet of magnetic intensity $2.4\times10^3~Am^{-1}$ is ___________ A.
Correct Answer
6
The current required to be passed through a solenoid of 15 cm length and 60 turns in order of demagnetise a bar magnet of magnetic intensity $2.4\times10^3~Am^{-1}$ is ___________ A.