write a simple method to magnetise a needle or a nail temporarily
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It can be wrapped around a conducting coil and electric current can be passed through it .
As a result the needle becomes magnetised and when the passage of electric current is interrupted , the iron strip becomes non magnetised . That is , it becomes normal .
Hope this answer is satisfactory
It can be wrapped around a conducting coil and electric current can be passed through it .
As a result the needle becomes magnetised and when the passage of electric current is interrupted , the iron strip becomes non magnetised . That is , it becomes normal .
Hope this answer is satisfactory
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