Question

Example 35.2
Figure (35.5) shows two long, straight wires car
electric currents in opposite directions. The se
between the wires is 5.0 cm. Find the magnetic field
a point P midway between the wires.
ns. The separation
10A
10A
Figure 35.5
Solution : The right-hand thumb rule shows that the
magnetic field at P due to each of the wires is



At solution in calculation why value of pie has been ignored?​

Answer 1

Answer:

Explanation:

It's not ignored basically...the value of u/4π is 10^-7...so the turns out to be like that