Advertisements
Advertisements
Question
Figure. shows a bar magnet placed on the table top with its north pole pointing towards south. The arrow shows the north-south direction. There are no other magnets or magnetic materials nearby.
What is the magnitude of the magnetic field at each neutral point? Give a reason for your answer.
Solution
Magnitude of magnetic field at neutral points is zero. It is so because at these points, the magnetic field of the magnet is equal in magnitude to the earth's horizontal magnetic field, but it is in opposite direction. Hence, they cancel each other.
APPEARS IN
RELATED QUESTIONS
Fill in the following blank with suitable words:
The earth's magnetic field is rather like that of a .......... magnet with its .......... pole in the northern hemisphere.
Explain why, a freely suspended magnet always points in the north-south direction.
What is a lodestone?
How will you test whether a given rod is made of iron or copper?
[Hint : Iron rod gets magnetised when placed near a bar magnet by magnetic induction, while copper rod does not get magnetised]
What do you meant by the term pole of a magnet? Magnetically speaking, what is the difference between a piece of brass, a piece of soft iron, and a piece of lode- stone?
Draw diagram showing the arrangement of the lines of force for a piece of soft iron laid in line with the magnetic field.
Complete the following diagram of magnets to show the lines of force.
Complete the following diagram of magnets to show the lines of force.
