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प्रश्न
How will you do this?
Explain that a magnet has a certain magnetic field.
उत्तर
A magnet has a certain magnetic field, which can be demonstrated using the below activity.
Take some drawing cardboard and sprinkle some iron filings on it. Notice the position of the iron filings as a whole. Now, take a bar magnet and slowly bring it below the cardboard. You will observe that the iron filings tend to attract towards the magnet and align themselves as shown.
It represents that the magnet exerts a force around its body with a stronger force near the two poles. Also, this regular pattern of the iron filings on the board represents the lines of magnetic field. Thus, a magnet has a certain magnetic field, which can be represented by curved lines around the magnet.
संबंधित प्रश्न
Fill in the blank
To light a table lamp and to run a refrigerator, we use ______ as the source of electricity.
How will you test whether a given rod is made of iron or not?
Describe a simple experiment to illustrate that like poles of two magnets repel each other while the unlike poles attract ?
How are the magnets kept safely? What is the role of keepers in storing the magnets?
Fill in the blank.
Magnetic poles always exist in ...............
How will you do this?
Find the north pole of a magnet.
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Mark on the diagram the poles of the second magnet,
How can you identify non-magnetic materials? Give an example of a nonmagnetic material.
Define artificial magnet.
