STANDARDPhysics-Magnetism
STANDARD Physics Magnetic Field MCQ Question
Type: MCQ-conceptual-Medium
If Bₑ represents equatorial magnetic field and Bₐ represents axial magnetic field due to a bar magnet. Which of the following relationships between Bₑ and Bₐ is correct?
A
Bₑ = 2Bₐ
B
Bₐ = 2Bₑ
C
Bₑ = 4Bₐ
D
Bₐ = 4Bₑ
Correct Answer
Option B
Detailed Explanation
As equatorial magnetic field due to bar magnet is Bₑ = μ₀M / 4πr³ and axial magnetic field due to bar magnet is Bₐ = μ₀ / 4π × 2M / r³. From these equations, we get Bₐ = 2Bₑ.
Found an issue with this question?