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प्रश्न
Which magnet will you use?
You are lost in a forest.
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उत्तर
A bar magnet or loadstone can be used to find the direction in the forest. This is because a bar magnet, when suspended freely, always rests in a north-south direction.
संबंधित प्रश्न
What is a magnetic compass ? State its use.
Draw diagrams of the artificial magnets of four different shapes?
Give a reason for the following.
Iron is a magnetic substance.
Define the following term regarding a bar magnet:
Magnetic axis
How will you do this?
Find the north pole of a magnet.
What is a natural magnet?
Give scientific reason:
Two steel needles hanging from the lower end of a vertical bar magnet do not hang vertically.
What is a neutral point?
Why it is not advisable to slide a magnet on an iron bar back and forth during magnetising it?
Match the following:
| 1. | Electricity and magnetism | a. | Step-down transformer |
| 2. | Force on the conductor | b. | Hans Christian Oersted |
| 3. | Electric bell | c. | I LB |
| 4. | Ns <Np | d. | Electromagnet |
