How Does a Semicircular Wire Affect Magnetic Field Direction and Magnitude?

[tarellan]

Homework Statement

Part of a long wire is bent into a semicircle of radius a, as in the figure . A current I flows in the direction shown.
a.)Use the Biot-Savart law to find the magnitude of the magnetic field at the center of the semicircle (point P).

b.) Find the direction of the magnetic field at the center of the semicircle (point P).

The magnetic field is directed to the right.
The magnetic field is directed to the left.
The magnetic field is directed into the page.
The magnetic field is directed out of the page.

Homework Equations

The Attempt at a Solution

I tried multiple attempts but I am not sure what I am doing wrong, can someone help??

 

[diazona]

We can't tell you what you're doing wrong if you don't show us what you did...