Suppose we have an infinitely long wire carrying a current of 2.0 A. It is bent into an L-shape extending into positive infinities along the x- and y- axes. Find the magnitude of the magnetic field at a point P with coordinates (0.2 m, 0.2 m). B

The value is = 4 x 10∧-6T

Explanation:

Let us assume or take the wire as two independent wires joint as the point (0,0)

The magnetic field (magnitude) is both parts of the contribution.

Which is,

B1+B2 =B  

B = µ₀I/πr

Where,

I=The current in the wire

µ₀= The magnetic permeability

r= distance to the wire

Therefore,

B= 2 (4π x 10-7 Tm/A) (2.0A)/2π (0.2m) or  

B= 2 (4π x 10-7 Tm/A) (2.0A)/2π (0.2m) (0.2m)

The value is =  4 x 10-∧6 T