Let B₁ be the magnitude of magnetic field at center of a circular coil of radius R carrying current I. Let B₂ be the magnitude of magnetic field at an axial distance ' x ' from the center. For x: R = 3: 4, B₂/B₁ is:

Magnetic Effects of Current and Magnetism: JEE Main 2025 Physics question

JEE Main 2025 · 2 Apr, Morning shift · Q43

JEE Main 20252 Apr, Morning shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

Let

B_1

be the magnitude of magnetic field at center of a circular coil of radius R carrying current I. Let

B_2

be the magnitude of magnetic field at an axial distance '

x

' from the center. For

x : R = 3 : 4

\frac{B_2}{B_1}

is :