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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
“Poles exist in pair”. Comment on this statement ?
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 |
Give a reason for the following.
Iron is a magnetic substance.
How will you do this?
Determine whether a material is magnetic or non-magnetic.
With whom should I pair up?
| Group 'A' | Group 'B' |
| (a) Compass | 1. The highest magnetic force |
| (b) The door of a cupboard | 2. Like poles |
| (c) Repulsion | 3. A magnet |
| (d) Magnetic pole | 4. A magnetic needle |
Describe two simple experiments to support the statement that magnetism is a property of the molecules of a magnet.
What do you understand by the term magnetic declination?
State three important properties of a magnet.
How can you identify non-magnetic materials? Give an example of a nonmagnetic material.
The strongest natural magnet is ______.
