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You are given two similar bars. One is a magnet and the other is of soft iron. How will you distinguish and identify them ?
Write true or false of the following statement.
Copper cannot be magnetised.
Fill in the blank.
The perpendicular bisector of the line joining the two poles of a magnet is called ...................
The alloys called ______ and ______ are used for making industrial magnets.
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.
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
What is the material of darkened part?
Match the following.
| Magnetite | Magnetic lines |
| A tiny pivoted magnet | Natural magnet |
| Cobalt | Compass box |
| Closed curves | Ferromagnetic material |
| Bismuth | Diamagnetic material |
Match the following:
| 1. | Electricity and magnetism | a. | Step-down transformer |
| 2. | Force on the conductor | b. | Hans Christian Oersted |
| 3. | Electric bell | c. | I LB |
| 4. | Ns <Np | d. | Electromagnet |
