Application/Skill-based Questions:
pearl?
1. Neetu was searching a sewing needle from the box containing buttons, threads and ribbons by using a
magnet
. Why did she use a magnet to search for the needle? Can she use it to search for her missing
2. Suppose you have a bar magnet with no marking of north and south poles. How will you find out which
end is the north pole and which is the south pole?
3. Suppose you are given a long bar magnet and asked to break it into four parts. Draw diagrams showing
the polarities of each broken part.
4. You are given an iron nail, an electric battery
, a long piece of an insulated copper wire and a safety pin.
With the help of a labelled diagram, describe the steps for making the iron nail, an electromagnet.
5. You are given two similar bars. One is a magnet and other is a soft iron. How will you identify which is
a magnet without using any other magnet or bar
Answers
Answered by
4
Explanation:
1) She used a magnet because she knew that the needle was made of iron and magnet attracts iron.
2) I would bring the opposite poles near each other ... the ones which do not attract each other are the north and south poles.
5) To identify if it is a magnet I will bring it closer to an iron object.... if it attracts the iron object , then it is a magnet ..!
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