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प्रश्न
What is the magnetic induction? Explain with the help of a diagram.
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उत्तर
The property by which an ordinary piece of iron acquires magnetic properties temporarily due to the presence of another magnet close to it is known as magnetic induction
Take a long nail. Put it on the arm of a stand. Spread some iron pins on the base of the stand. You will find that the pins do not get attracted to the nail. Now touch a magnet at the end of the nail. As the end is brought close to the head of the nail, some pins cling to the nail. It happens because the nail turns into the magnet and acquires the properties of magnetism. The moment you remove the magnet from the head of the nail. The pins will fall down. It will no more be a magnet.
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संबंधित प्रश्न
You are given a magnet. How will you use it to find north-south direction at a place?
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 |
Define the following term regarding a bar magnet:
Magnetic field
Write the answer in your word.
What are the practical uses of a magnet?
Describe, how you will proceed to determine the position of the pole of a bar magnet.
Define the term Effective length of a magnet
With the help of a diagram explain the following:
Magnetisation of an iron bar by a single touch method.
Differentiate between:
Primary and secondary cell.
What is the connection between electricity and magnetism?
