Question

Differentiate between bar magnet and electro magnet​

Answer 1

A bar magnet and an electromagnet are two different types of magnets that produce magnetic fields.

A bar magnet is a permanent magnet that generates a magnetic field due to the alignment of the electrons in the magnet's material. This type of magnet has a north pole and a south pole and its magnetic field remains constant over time.

An electromagnet, on the other hand, is a temporary magnet that generates a magnetic field when an electric current flows through a conductor. The magnetic field is proportional to the magnitude of the current and disappears when the current is turned off. Electromagnets are often used in applications such as motors, generators, and solenoids because their magnetic field can be controlled by adjusting the current.

In summary, the main difference between a bar magnet and an electromagnet is that a bar magnet is a permanent magnet while an electromagnet is a temporary magnet that requires a current to produce a magnetic field.

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Answer 2

Permanent(Bar)magnet

(1)hey are permanently magnetized

(2)These are usually made of hard materials.

(3) The strength of the magnetic field line is constant. it can not be varied.

(4)The pole of permanent magnet can not change

(5)Example of permanent magnet is Bar Magnet

Electromagnet

(1) These are temporary Magnetized.

(2) They are usually made of soft materials.

(3)The strength of the magnetic fields can be varied accordingly to our need.

(4) The poles of an electromagnet can be altered

(5) Example of a temporary magnet is solenoid wounded across a nail and connected to a battery..

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