Advertisements
Advertisements
Question
What is the magnetic induction? Explain with the help of a diagram.
Advertisements
Solution
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.

APPEARS IN
RELATED QUESTIONS
Fill in the blank.
Magnetic poles always exist in ...............
How will you do this?
Determine whether a material is magnetic or non-magnetic.
Write the answer in your word.
Write the properties of a magnet.
Fill the blank spaces in the table given below:
| Nature of bar | Action of compass needle | |
| North Pole | South Pole | |
| Non-magnetic | No action | ________ |
| ________ | attracted | attracted |
| North pole of a bar magnet | ________ | _________ |
| ________ | attracted | repelled |
Draw a clearly labelled diagram, to show how a steel bar is magnetised by a divided touch method. A written description is not required.
Define the term Poles of a magnet
Write a short note on lighting conductors.
State the laws of magnetism.
People who made mariner’s compass for the first time.
Observe the pictures A and B given in figure carefully.

Which of the following statement is correct for the above given pictures?
