Question

a) what is a solenoid? draw a sketch of the pattern of field lines of the magnetic field through and around a current carrying solenoid. (b) consider a circular loop of a wire lying in the plane of the table. let the current pass through the loop clockwise. apply the right hand rule to find out the direction of the magnetic field inside and outside the loop.

Answer 1

A solenoid is a coil of wire simply

Answer 2

(a) Solenoid is a long wire coiled in a close packed helix.

(b) the direction of magnetic field is into the plane of table .