MHT CET202616 April 2026Evening ShiftPhysicsMagnetic Effects of CurrentActual
The magnitude of magnetic induction at mid point 'O' due to current arrangement as shown in figure will be ( ₀ = permeability of free space)
Options
- A₀ I 2 a
- Bzero
- C₀ I 4 a
- D₀ I a
Correct answer
D. ₀ I a
Step-by-step solution
From the given figure, the horizontal distance between the vertical wire segment BC and the vertical wire segment ET is a . Since point O is the midpoint, the perpendicular distance from O to each of these vertical segments is a/2 . Assuming the horizontal wire segments AB and DE are collinear and their extended axis passes through O, the magnetic field produced by them at point O is zero. The vertical segment BC acts as a semi-infinite straight wire with its end at the level of O. The magnetic induction at O due t