Q62
The magnetic field inside a current carrying very long solenoid is
- (a) Uniform
- (b) Non-uniform
- (c) Zero
- (d) Highest at mid-point
NDA 2 2025 GAT, question 62
Solution.
Answer: (a) Uniform
- For an ideal very long solenoid, the internal field away from the ends is approximately B=μ₀nI, independent of position.
- It is therefore uniform; end effects are neglected in the stated long-solenoid model.