Answer:
H=(0,0,2.39)A/m
Step-by-step explanation:
Ampere's Law for a current filament:
H*(2*pi*R)=I ⇒ H=I/(2*pi*R)
in this case R=y=1; because the current is in the axis x
H=I/(2*pi)=15/(2*pi) A/m=2.39A/m; magnitude
the vector:
to find the direction of the magnetic force H, we uses the right hand rule
H=(0,0,2.39)A/m