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Questions and Answers
Rubbing a sewing needle with a bar magnet several times will always magnetize the needle.
Rubbing a sewing needle with a bar magnet several times will always magnetize the needle.
True (A)
A red cork ball should be pinned to the North Pole of the needle to make it float in water.
A red cork ball should be pinned to the North Pole of the needle to make it float in water.
False (B)
When two needles with like ends facing each other are floated side by side, they repel each other.
When two needles with like ends facing each other are floated side by side, they repel each other.
True (A)
Placing the needles such that unlike ends face each other (White ball of first needle and red ball of second needle) will make them attract each other.
Placing the needles such that unlike ends face each other (White ball of first needle and red ball of second needle) will make them attract each other.
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Rubbing a sewing needle with a bar magnet only once will magnetize the needle.
Rubbing a sewing needle with a bar magnet only once will magnetize the needle.
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