Physics

Problem

Two coaxial, coplanar circular loops of radii

8\,\text{cm}

and

4\,\text{cm}

carry currents of

6\,\text{A}

and

4\,\text{A}

respectively in opposite directions. Determine the magnitude of the resultant magnetic field at a point on the common axis

10\,\text{cm}

from the centre on the side of the larger loop. a)

14.7\,\mu\text{T}

8.3\,\mu\text{T}

11.5\,\mu\text{T}

6.0\,\mu\text{T}