Question

a) What do you mean by solenoid? Draw its pattern of magnetic field.

Answer 1

a cylindrical coil of wire acting as a magnet when carrying electric current.
it is also known as inductor
here is a picture attached I hope this could help you with!!!

Answer 2

Answer:

Solenoid is the coil with many circular twens of insulated copper wire wrapped closed in the shape of a cylinder. A current carrying solenoid produces similar pattern of magnetic field as a bar magnet. One end of solenoid behave a the normal pole or other as South pole