Advertisements
Advertisements
प्रश्न
If a bar magnet is cut into equal pieces by cutting it at right angles to its axis at two places, ______ bar magnets are formed, and a total of _____ poles are formed.
पर्याय
6
3
2
Advertisements
उत्तर
If a bar magnet is cut into equal pieces by cutting it at right angles to its axis at two places, 3 bar magnets are formed, and a total of 6 poles are formed.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
To light a table lamp and to run a refrigerator, we use ______ as the source of electricity.
How will you test whether a given rod is a magnet or not ?
How will you test whether a given rod is made of iron or not?
What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.
Answer the following in short.
What is a magnet? Differentiate between natural and artificial magnets.
The real test of a magnet is ______.
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 |
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 |
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.

Name the metal used for E and F.
Match the following.
| Magnetite | Magnetic lines |
| A tiny pivoted magnet | Natural magnet |
| Cobalt | Compass box |
| Closed curves | Ferromagnetic material |
| Bismuth | Diamagnetic material |
