# Get Answers to all your Questions

#### A current flows in an infinitely long wire with cross-section in the form of a semicircular ring of radius The magnitude of the magnetic induction along its axis is Option 1) Option 2) Option 3) Option 4)

As we learnt in

For Finite Length -

- wherein

Current in a small element dI

Magnetic field due to the element

Option 1)

Correct

Option 2)

Incorrect

Option 3)

Incorrect

Option 4)

Incorrect