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Question
Which magnet will you use?
A window shutter opens and shuts continuously in the wind.
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Solution
Permanent magnet can be used to stop the continuous shuttering of the window in the wind.
RELATED QUESTIONS
Write true or false of the following statement.
Copper cannot be magnetised.
State if the following statement is true or false. Correct the statement if it is false.
Attraction is the surest test for magnetism.
Answer the following in short.
If a bar magnet is placed over iron filings, where will the attraction of the iron fillings be
- maximum?
- minimum?
Define the following term regarding a bar magnet:
Effective length
Write the answer in your word.
Write the properties of a magnet.
Differentiate between:
Primary and secondary cell.
State the laws of magnetism.
The south pole of a bar magnet and the north pole of a U-shaped magnet will _______.
Magnets are used in _______ for generating electricity.
Match the following.
| Magnetite | Magnetic lines |
| A tiny pivoted magnet | Natural magnet |
| Cobalt | Compass box |
| Closed curves | Ferromagnetic material |
| Bismuth | Diamagnetic material |
