Advertisements
Advertisements
प्रश्न
Answer the following in short.
What is a magnet? Differentiate between natural and artificial magnets.
Advertisements
उत्तर
A magnet is a piece of metal that can attract metals such as iron-cobalt and nickel. Naturally occurring rocks such as Lodestone or magnetite have the ability to attract magnetic substances and hence are called natural magnets.
Magnets that are made by man from magnetic substances ara called artificial magnets. These come in different shapes such as bar magnets, horseshoe magnets, disc magnets, and ring magnets. Artificial magnets can be made in any size, shape or strength as desired but natural magnets cannot be made as desired.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
To light a table lamp and to run a refrigerator, we use ______ as the source of electricity.
State if the following statement is true or false. Correct the statement if it is false.
As we move away from a magnet, its attraction power weakens.
When magnetic material is taken close to a magnet, the material acquires ______.
Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic south.
Define the following term:
Angle of declination
Give scientific reason:
Soft iron is used to make electromagnets.
Give scientific reason:
Not attraction but repulsion is a sure test of magnetism.
Consider the statement given below and choose the correct option.
Assertion: Iron filings are concentrated more at the magnetic poles.
Reason: The magnets are so sharp.
List out the uses of magnets.
