railway RRB Technician Grade 1 Mock Test 2024 Physics Moving Charges and Magnetism Solenoids and Toroids
Which one of the following statements regarding a current-carrying solenoid is not correct?
1
The magnetic field inside the solenoid is uniform.
2
The current-carrying solenoid behaves like a bar magnet.
3
The magnetic field inside the solenoid increases with increase in current.
4
If a soft iron bar is inserted inside the solenoid, the magnetic field remains the same.