Question

What is the difference in behaviour of a solenoid and magnetic dipole?

Answer 1

Hint:Any device that uses a solenoid to transfer electrical energy to mechanical energy is referred to as a solenoid. The gadget uses electric current to generate a magnetic field, which it then uses to generate linear motion. A solenoid is an electromagnetic coil with a length that is significantly bigger than its diameter.

Complete step by step answer:
A solenoid is an electromagnet that uses a coil coiled into a densely packed helix to create a regulated magnetic field. When an electric current is fed through the coil, it may be configured to generate a homogeneous magnetic field in a volume of space. When a current runs through the solenoid, the current in each circular loop has the same direction, resulting in a strong magnetic field. The magnetic field within the solenoid is almost uniform and parallel to the solenoid's axis.

A magnetic dipole is the limit of a closed loop of electric current or a pair of poles when the source's size is decreased to zero while the magnetic moment remains constant. It's a magnetic equivalent of the electric dipole, although it's not a perfect match. A genuine magnetic monopole, which is the magnetic equivalent of an electric charge, has never been detected in nature. Because magnetic monopoles do not exist, every static magnetic source's magnetic field appears to be the field of a dipole with the same dipole moment at a great distance. Higher-order sources with no dipole moment have a field that decays quicker with distance to zero than a dipole's.

A solenoid produces a magnetic field that is remarkably comparable to that of a bar magnet. The solenoid has N-polarity on one end and S-polarity on the other, similar to a bar magnet. The polarity of any end of the coil may be calculated using the dock rule. For all intents and purposes, the magnetic fields of a solenoid and a bar magnet are interchangeable.

Note:The force delivered to the armature is proportional to the change in coil inductance as a function of armature position and current flowing through the coil (see Faraday's law of induction). The force acting on the armature will always cause it to move in a direction that increases the inductance of the coil. Electronic paintball markers, pinball machines, dot matrix printers, and gasoline injectors all use electromechanical solenoids.