What is a solenoid ? Compare the magnetic fleld produced by a solenoid with the magnetic fleld of a bar magnet. Draw neat figures and name various eomponents.

Explanation

(i). When a copper wire with a resistive coating is wound in a chain of loops (like a spring), it is called as solenoid.
(ii). Whenever electric current passes through a solenoid, magnetic lines of force are produced in a pattern as shown in the figure.

(iii). The magnetic field produced by a solenoid is similar to the magnetic field of a bar magnet. One end of the coil acts as south pole and the other end acts as north pole whereas, the field lines are parallel inside the solenoid.