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प्रश्न
Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic, north.
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उत्तर
Bar magnet placed in magnetic meridian with its north pole pointing geographic north.
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संबंधित प्रश्न
Match the following
| Column A | Column B |
| (a). Human body | (1). electric bell |
| (b). Silk thread | (2). current |
| (c). Charge in motion | (3). conductor |
| (d). soft iron | (4). electromagnet |
| (e) . Electromagnet | (5). insulator |
Answer the following in detail.
How can a magnet be demagnetized?
Draw a clearly labelled diagram, to show how a steel bar is magnetised by a divided touch method. A written description is not required.
What are magnetic keepers? What are they used for?
What do you understand by the term magnetic declination?
Define the following term:
Angle of declination
Give scientific reason:
Soft iron is used to make electromagnets.
Give scientific reason:
Two steel needles hanging from the lower end of a vertical bar magnet do not hang vertically.
You are provided with two identical metal bars. One out of the two is a magnet. Suggest two ways to identify the magnet.
Define artificial magnet.
