Question

What is the pattern of field lines inside a solenoid ? What do they indicate .​

Answer 1

The field lines inside a solenoid run parallel from north to south and this indicates that solenoid behaves as a bar magnet.

Answer 2

Answer:

A solenoid is an electrical component constructed by winding a long insulated wire in the form of a tightly packed helix. Pattern of field lines indicate that solenoid behaves like a bar magnet. Magnetic lines inside a solenoid are dense so there is a strong fairly uniform magnetic field inside the solenoid.