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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
Describe a simple experiment to illustrate that like poles of two magnets repel each other while the unlike poles attract ?
How will you do this?
Determine whether a material is magnetic or non-magnetic.
Which magnet will you use?
You are lost in a forest.
There is repulsion between the _____ poles of a magnet and attraction between its _____ poles.
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 |
Define the term Magnetic axis
Define the following term:
Angle of dip
Give scientific reason:
Not attraction but repulsion is a sure test of magnetism.
How can you identify non-magnetic materials? Give an example of a nonmagnetic material.
Why it is not advisable to slide a magnet on an iron bar back and forth during magnetising it?
