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प्रश्न
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
What is the material of darkened part?
एक पंक्ति में उत्तर
उत्तर
The darkened part is a non-magnetic material like wood.
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संबंधित प्रश्न
Name four appliances which work using electricity ?
Define the following term regarding a bar magnet:
Magnetic field
Answer the following in detail.
Write a short note on the theory of magnetism.
Answer the following in detail.
How is the single-touch method of magnetism different from the double-touch method?
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 |
Describe, how you will proceed to determine the position of the pole of a bar magnet.
What is an artificial magnet? Why do we need artificial magnets?
Describe a simple experiment to demonstrate that like poles repel each other while unlike poles attract.
State three important properties of a magnet.
Give scientific reason:
Not attraction but repulsion is a sure test of magnetism.
