MHT CET 2024 Physics question
A long solenoid carrying a current produces magnetic field B along its axis. If the number of turns per cm are tripled and the current is made then the new value of magnetic field will be
Answer: (C)
Solution
The field along the axis of a long solenoid is , where is the number of turns per unit length. The new values are and , so \dfrac{I}{4}$) =
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