Answer:
Net magnetic field at that position is given as 1.3 G
Explanation:
As we know that the magnetic field due to wire at the given position is
[tex]B_1 = 1.20 G[/tex]towards East
now magnetic field due to Earths field is given as
[tex]B_2 = 0.50 G[/tex] Towards North
so net magnetic field at the given position is vector sum of magnetic field due to these two fields
So it is given as
[tex]B = \sqrt{B_1^2 + B_2^2}[/tex]
so we will have
[tex]B = \sqrt{1.20^2 + 0.50^2}[/tex]
[tex]B = 1.3 G[/tex]