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प्रश्न
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?
उत्तर
E and F are placed in contact with the poles of magnets to preserve the strength of the magnet.
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संबंधित प्रश्न
State if the following statement is true or false. Correct the statement if it is false.
Whenever a magnet is not in use, it should be stored along with other magnets.
Answer the following in detail.
Write a short note on the theory of magnetism.
Fill the blank spaces in the table given below:
| Nature of bar | Action of compass needle | |
| North Pole | South Pole | |
| Non-magnetic | No action | ________ |
| ________ | attracted | attracted |
| North pole of a bar magnet | ________ | _________ |
| ________ | attracted | repelled |
Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic, north.
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Name the metal used for E and F.
Define the following term:
Angle of dip
Draw the magnetic field lines around a bar magnet when a bar magnet is placed such that the N pole points North.
State the laws of magnetism.
List out the uses of magnets.
