Question

A bar magnet is cut into 4 equal parts . What will be the Magnetic Strength of each new part ?

Answer 1

A bar magnet is cut into 4 equal parts . What will be the Magnetic Strength of each new part ?

Answer:

⇒ The Magnetic Strength of each new part when a bar magnet is cut into 4 equal parts is is half of the Magnetic Strength of the original bar magnet.

But,

⇒The pole strength of each new part when a bar magnet is cut into 4 equal parts is same as the pole strength of the original bar magnet. 

Answer 2

Question :

A bar magnet is cut into 4 equal parts . What will be the Magnetic Strength of each new part ?

Answer :

The strength of magnetic field of a bar magnet is directly proportional to the length of the magnet .

B ∝ L

B = magnetic field .

L = length .

By this statement we mean :

Ф If we increase the length then the magnetic field would increase .

Ф If we decrease the length then the magnetic field would decrease.

Coming back to your question :

The magnet was cut into 4 equal pieces .

Then the magnetic field would obviously decrease.

The new magnetic field strength will become one - fourth of the original magnetic field strength.