Question

what are 5 differences between a solenoid and a bar magnet?​

Answer 1

Difference between a Bar Magnet and a Solenoid

• The bar magnet is a permanent magnet whereas a solenoid is an electromagnet ie, it acts as a magnet only when an electric current is passed through.
• When a bar magnet is cut into two halves, both the pieces act as a magnet with the same magnetic properties whereas when a solenoid is cut into two halves, they will have weaker fields.
• The poles of the bar magnet are fixed whereas for a solenoid the poles can be altered.
• The strength of the magnetic field of a bar magnet is fixed ie, unaltered whereas the strength of the magnetic field of a solenoid depends on the electric current that is passed through it.

Answer 2

Hello mate

Solenoid :-

1. They are temporarily magnetized.

2. A solenoid can produce very strong magnetic force.

3. The polarity of a solenoid can be reversed by changing the direction of current in its coil.

4. It can easily be demagnetized by switching off the current.

5. It produces a magnetic field as long as there is current flow.

Bar magnet :-

1. They are permanently magnetized.

2. A bar magnet produces a comparatively weak force of attractions.

3. The polarity of a bar magnet is fixed and cannot be reversed.

4. It cannot be easily be demagnetized.