Advertisements
Advertisements
Question
Answer the following in detail.
Write a short note on the theory of magnetism.
Advertisements
Solution
All substances are made of minute particles. In a magnetic substance whether magnetized or non-magnetized), each individual particle behaves like an independent magnet. In the unmagnetized state, these particles within the substance are present in a random fashion such that they cancel out the magnetic effects of each other.
In a magnetized state, these particles align in a particle direction and the substance behaves like a magnet.
APPEARS IN
RELATED QUESTIONS
Answer the following in short.
What is a magnet? Differentiate between natural and artificial magnets.
Answer the following in detail.
How can a magnet be demagnetized?
Define the following term regarding a bar magnet:
Magnetic equator
If a bar magnet is hung by a thread tied at its center, its north pole becomes steady in the direction of the ______ Pole of the earth.
Draw lines of force surrounding a bar magnet when it is placed in the magnetic meridian with its north pole pointing geographic south.
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Name the metal used for E and F.
What do you understand by the term magnetic declination?
Define the term Poles of a magnet
State three important properties of a magnet.
Define artificial magnet.
