What does the divergence of magnetic field lines near the ends of a current carrying straight solenoid indicate?
Solution:
For practical length solenoid, the magnetic field strength is weaker at the ends and stronger within the solenoid.
Hence if we draw magnetic field lines, the degree of closeness will be maximum within the solenoid and it decreases as we go towards the end.
This can be shown as the divergence of magnetic field lines near the ends of a current-carrying solenoid