Question

waht is solenoid? compare the magnetic field produce by a salenoid with the magnetic field of a bar magnet ​

Answer 1

The solenoid is a long cylindrical coil of wire consisting of a large no. of turns bound together very tightly.

The poles of the bar magnet do not lie exactly on the end of the magnet but is somewhat inside. In solenoid poles can be considered to be lying at the edge.

2) The magnetism retains in the bar magnet naturally but in solenoid the magnetism is there so long current flows through it.

3) Magnetic field of a bar magnet emanates from throughout the body of the magnet, with more intensity at the poles. While there is no field emanating from the lateral surface of the solenoid.

Hope this helps you....!!