What is a solenoid? Draw the pattern of magnetic field lines of a current carrying solenoid and a bar magnet. Also, list two distinguishing features between the two fields.
Solenoid:
The pattern of magnetic field lines of a current-carrying solenoid :
The pattern of magnetic field lines of bar magnet:
Two distinguishing features between the two fields are given below:
Features | Solenoid | Bar Magnet |
| The poles of a solenoid are considered to be at the edge. | Inside the bar magnet are the poles of the bar magnet. |
2. Magnetism | Magnetism exists in a solenoid until an electric current flows through it. | Magnetism is always present in a bar magnet. |