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प्रश्न
How are the north and south poles of a magnet located? Explain.
उत्तर
Suspend a bar magnet with a silk thread from a wooden stand as shown in the figure. The magnet swings for some time and then eventually comes to rest in a particular direction i.e., north-south direction. If we disturb the magnet a little, the magnet again comes to rest in the north-south direction.
The end of the magnet which points towards the north is called the north-seeking pole or simply the north pole and the end which points towards the south is called the south seeking pole or simply the south pole. The north and south poles are marked by the letters N and S respectively.
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संबंधित प्रश्न
In which direction does a suspended bar magnet come to rest? Give reason.
Suggest one way to recognize the magnetic field of the earth.
Describe an experiment to illustrate that like poles repel while the, unlike poles, attract.
State if the following statement is true or false. Correct the statement if it is false.
If a bar magnet is cut in two pieces, then one piece will have only the north pole and the other will have only the south pole.
You are provided with two similar bars, one is a magnet and the other is a soft iron. How will you distinguish between them without the use of any other magnet or bar?
[Hint : A magnet when suspended freely will rest only in the north-south direction, but the soft iron bar will rest in any direction]
Two like magnetic poles:
A charge of 25 C is moved from infinity to points A and B in an electric field when the work is done to do so is 10 J and 10.5 J respectively. Calculate the potential difference between points A and B.
Define the magnetic meridian.
Give short account of the earth’s magnetic field.
What is the diameter of the magnetar?
