Question

IS A BAR MAGNET EQUIVALENT SOLENOID? EXPLAIN

Answer 1

Bar Magnet as an Equivalent Solenoid. When a current carrying solenoid is suspended freely, it stays along north-south direction. Similarly when two current carrying solenoids are brought closer, they either attract or repel.

Answer 2

Answer:

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.

Similarities between a Bar Magnet and a Solenoid

Bar magnet and solenoid both have attractive and directive properties ie, to align itself along the external magnetic field.

The magnetic field at the axial point is the same for both.

The magnetic moment is the same for both.

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