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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
Write true or false of the following statement.
Magnetic keeper is a wooden piece.
Match the following
| Column A | Column B |
| A) Steel | 1) to store magnets |
| B) Soft iron | 2) temporary magnet |
| C) Use in electric bell | 3) permanent magnet |
| D) Magnetic keepers | 4) electromagnet |
What is a magnet?
Give a reason for the following.
Iron is a magnetic substance.
Define the following term regarding a bar magnet:
Magnetic field
Answer the following in detail.
How can a magnet be demagnetized?
There is repulsion between the _____ poles of a magnet and attraction between its _____ poles.
Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic, north.
Give scientific reason:
Two steel needles hanging from the lower end of a vertical bar magnet do not hang vertically.
Explain the following:
Resistance of a conductor
