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प्रश्न
Fill in the blank
Like poles ______ each other and unlike poles _____
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उत्तर
Like poles repel each other and unlike poles attract.
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संबंधित प्रश्न
Select the correct answer
An example of natural magnet is
State four important properties of a bar magnet?
Give a reason for the following.
Iron is a magnetic substance.
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?
If a bar magnet is hung by a thread tied at its center, its north pole becomes steady in the direction of the ______ Pole of the earth.
If a magnet attracts a piece of metal, that piece must be made of ______.
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:
Soft iron is used to make electromagnets.
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.
