Advertisements
Advertisements
प्रश्न
Answer the following in detail.
How can a magnet be demagnetized?
थोडक्यात उत्तर
Advertisements
उत्तर
A magnet can be demagnetized in the following ways :
- rough handling
- hammering the magnet several times.
- passing an alternating current around the magnet.
- dropping the magnet on the floor several times.
- heating the magnet to a very high temperature.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
Magnetic poles occur in pairs.
Match the following
| Column A | Column B |
| A) Steel | 1) to store magnets |
| B) Soft iron | 2) temporary magnet |
| C) Use in electric bell | 3) permanent magnet |
| D) Magnetic keepers | 4) electromagnet |
Answer the following.
Can you bring two similar poles of two different magnetic close together easily? Why?
A magnet remains steady in a ________ direction.
Write the answer in your word.
Write the properties of a magnet.
How will you test whether a given rod is made of iron or copper?
You are given two similar bars; one is a soft iron and the other is a magnet. How will you distinguish between them without using any other magnet or bar?
Give scientific reason:
Soft iron is used to make electromagnets.
Differentiate between:
Primary and secondary cell.
Why it is not advisable to slide a magnet on an iron bar back and forth during magnetising it?
