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प्रश्न
Answer the following in detail.
How is the single-touch method of magnetism different from the double-touch method?
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उत्तर
| Single-touch method of magnetism | Double- touch method pf magnetism |
| (1) A magnet is rubber along with the magnetism substance (needle or iron piece) from one end to another and lifted vertically upwards. | (1)Opposite poles of two magnets are placed next to each other at the center of the magnetic. substance and rubbed in the opposite direction |
(2)  |
(2)  |
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संबंधित प्रश्न
Describe a simple experiment to illustrate that like poles of two magnets repel each other while the unlike poles attract ?
Write true or false of the following statement.
Magnetic keeper is a wooden piece.
Answer the following in detail.
List four methods of magnetizing a magnetic substance.
With whom should I pair up?
| Group 'A' | Group 'B' |
| (a) Compass | 1. The highest magnetic force |
| (b) The door of a cupboard | 2. Like poles |
| (c) Repulsion | 3. A magnet |
| (d) Magnetic pole | 4. A magnetic needle |
Give scientific reason:
Not attraction but repulsion is a sure test of magnetism.
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 _______.
Why it is not advisable to slide a magnet on an iron bar back and forth during magnetising it?
Define natural magnet.
