the figure concin

$2$

and $Q,$ as appropriate.

$($a$)[5$ pts$.]$ Use Biot$-$Savart's law to calculate the magnetic field, magnitude and direction, at point $P,$ due to each straight wire segment.

$($b$)[10$ pts$.]$ Use Biot$-$Savart's law to calculate the magnetic field, magnitude and direction, at point $P,$ due to the circular are.

$($c$)$ pts$.]$ What is the total magnetic field, magnitude and direction, at point P $,$ due to the entire wire?

$($d$)$ pts$.$