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प्रश्न
Name four appliances which work using electricity ?
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उत्तर
- an electric iron
- an electric heater
- an electric kattle
- an immersion rod
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संबंधित प्रश्न
Fill in the blank
To light a table lamp and to run a refrigerator, we use ______ as the source of electricity.
Match the following
| Column A | Column B |
| (a). Human body | (1). electric bell |
| (b). Silk thread | (2). current |
| (c). Charge in motion | (3). conductor |
| (d). soft iron | (4). electromagnet |
| (e) . Electromagnet | (5). insulator |
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.
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?
What do you understand by poles of a magnet?
Define the following term:
Angle of declination
Give scientific reason:
Two steel needles hanging from the lower end of a vertical bar magnet do not hang vertically.
Give scientific reason:
Not attraction but repulsion is a sure test of magnetism.
State the laws of magnetism.
