(b) will increase
If a soft iron bar is inserted inside a current-carrying solenoid, the magnetic field inside the solenoid will increase.
A soft iron bar is placed inside a current-carrying solenoid. The magnetic field inside the solenoid will _____.
The magnetic field inside a long straight solenoid carrying current :
(a) is zero
(b) decreases as we move towards its end.
(c) increases as we move towards its end.
(d) is the same at all points.