Question

How does a solenoid act as a bar magnet can you determine the north and south poles of current carrying solenoid the help of bar magnet explain?

Answer 1

• Magnetic field lines are produced around the solenoid when a current is allowed to flow through it. ... In the above figure, when the north pole of a bar magnet is brought near the end connected to the negative terminal of the battery, the solenoid repels the bar magnet.
• Solenoid is coil having n number of turns of insulated copper wire. Magnetic field lines are produced around the solenoid when a current is passed through it. The magnetic field produced by it is similar to the magnetic field of a bar magnet. The field lines produced in a current-carrying solenoid is shown in the following figure.
• When the north pole of a bar magnet is brought near to the end connected to the negative terminal of the battery, then the solenoid repels the bar magnet. It means the end of solenoid which is connected to the negative terminal of the battery behaves as north pole as like poles repel each other similarly the other and behaves as a south pole.

Answer 2

If you see the magnetic magnetic field lines in the space of solenoid you will see it resembles a bar magnet

inside it is constant
and outside it is position varying
just as bar magnet


about
the direction





first see the direction of current in the solenoid
and then with the help of right hand thumb rule find the direction of magnetic field as inside the bar magnet the field direction is from south pole to the north pole so your thumb points in the direction of North pole and hence other will be the south pole