alleryStart learning →Far from a small current loop, the field on its axis falls with distance x as
Ax
B1/x^2
C1/x^3
D1/x
Answer & Solution
Correct answer: C. 1/x^3
For x much larger than R the axial formula reduces to mu0 I R^2/(2 x^3), so B falls as 1/x^3.
Keep practising Moving Charges and Magnetism
Browse all Moving Charges and Magnetism questions for AP EAMCET, or explore more Physics topics.
Related questions
Fields from several magnetic sources combine byMagnetic field lines due to a currentVelocity along +x and B along +y: the force on a proton points alongCurling the right-hand fingers along a loop current, the thumb showsWhich change raises the current sensitivity of a galvanometer?The deflection of a moving coil galvanometer is proportional to theIn a moving coil galvanometer the deflecting torque is balanced byA single loop of area 0.02 m^2 carries 5 A with its plane parallel to a 0.1 T field. Torqu