NDA 2022 Physics question

Which one of the following statements regarding a current-carrying solenoid is not correct?

(A)The magnetic field inside the solenoid is uniform.
(B)The current-carrying solenoid behaves like a bar magnet.
(C)The magnetic field inside the solenoid increases with increase in current.
(D)If a soft iron bar is inserted inside the solenoid, the magnetic field remains the same.Correct

Answer: (D)

Solution

Inside a long solenoid the field is uniform and equal to , so it increases with the current, and the solenoid as a whole behaves like a bar magnet; (a), (b) and (c) are

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-032203