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प्रश्न
Define the term Effective length of a magnet
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उत्तर
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संबंधित प्रश्न
State if the following statement is true or false. Correct the statement if it is false.
As we move away from a magnet, its attraction power weakens.
How will you do this?
Explain that a magnet has a certain magnetic field.
If a bar magnet is hung by a thread tied at its center, its north pole becomes steady in the direction of the ______ Pole of the earth.
There is repulsion between the _____ poles of a magnet and attraction between its _____ poles.
If a magnet attracts a piece of metal, that piece must be made of ______.
Write the answer in your word.
What are the practical uses of a magnet?
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Why are E and F placed in contact with the poles of the magnets as shown in the diagram?
Define the following term:
Angle of declination
Give scientific reason:
Soft iron is used to make electromagnets.
A magnet attracts ______.
