9. Which of the following can demagnetize a magnet?
(A). Hanging it North-South direction (D). Heating and hammering it
(B). Using it in dynamo
(E). Using it in radio speaker
(C). Putting it in water
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Home » Business » 9. Which of the following can demagnetize a magnet? (A). Hanging it North-South direction (D). Heating and hammering it (B). Using it in dynamo (E). Using it in radio speaker (C). Putting it in water