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प्रश्न
Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
पर्याय
True
False
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उत्तर
This statement is False.
Correct statement:
Maximum iron filings stick in the poles of a bar magnet when it is brought near them.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Like poles ______ each other and unlike poles _____
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 |
You are given two similar bars. One is a magnet and the other is of soft iron. How will you distinguish and identify them ?
What is a magnetic compass ? State its use.
Name four appliances which work using electricity ?
Write true or false of the following statement.
Copper cannot be magnetised.
Fill in the blank.
Magnetic poles always exist in ...............
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?
Answer the following in detail.
How can a magnet be demagnetized?
Which magnet will you use?
A window shutter opens and shuts continuously in the wind.
Distinguish between the two methods of making artificial magnets.
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 |
Describe, how you will proceed to determine the position of the pole of a bar magnet.
Define the term Magnetic axis
With the help of a diagram explain the following:
Magnetisation of steel needle using electric current such that the pointed end should have north polarity.
Artificial magnets are made in different shapes such as ______, _____ and _______.
Consider the statement given below and choose the correct option.
Assertion: Iron filings are concentrated more at the magnetic poles.
Reason: The magnets are so sharp.
How can you identify non-magnetic materials? Give an example of a nonmagnetic material.
List out the uses of magnets.
Define the terms magnet and magnetism.
