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प्रश्न
How will you do this?
Explain that a magnet has a certain magnetic field.
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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
You are given a magnet. How will you use it to find north-south direction at a place?
Write true or false of the following statement.
Magnetic poles occur in pairs.
Answer the following in short.
If a bar magnet is placed over iron filings, where will the attraction of the iron fillings be
- maximum?
- minimum?
Answer the following in detail.
How can a magnet be demagnetized?
Define the following term regarding a bar magnet:
Magnetic equator
The real test of a magnet is ______.
Draw the magnetic flux pattern near a bar magnet placed with its axis in the magnetic meridian and the south pole pointing towards geographic north.
Differentiate between:
Primary and secondary cell.
Thamizh Dharaga and Sangamithirai were playing with a bar magnet. They put the magnet down and it broke into four pieces. How many poles will be there?
