Advertisements
Advertisements
प्रश्न
Give a reason for the following.
Electromagnets are temporary magnets.
Advertisements
उत्तर
An electromagnet is a temporary magnet because it behaves like a magnet only till the current is passed through it. When the ~ current is stopped, it stops behaving like a magnet.
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
Artificial magnets are weaker than the natural magnets.
Fill in the blank.
Temporary magnets are usually made up of .................
Select the correct answer
Making a magnetic substance a magnet by bringing it closer to another magnet without touching it, is
Select the correct answer
The artificial magnet used to detect direction in the laboratory is
Describe the method by which an iron bar can be made a magnet.
Name the material of the core of an electromagnet for temporary magnet.
Tick the most appropriate answer.
A permanent magnet can be demagnetized by
Answer the following in detail.
Distinguish between a temporary magnet and a permanent magnet.
It was observed that a pencil sharpener gets attracted by both the poles of a magnet although its body is made of plastic. Name a material that might have been used to make some part of it.
You are given an iron strip. How will you make it into a magnet?
