i cannot remember whether i have posted this question before but i have done
most of it apart from the direction parts. i do not know how to work it out.
i think when i posted it, one of you suggested the right hand rule. i still
cannot seem to do it.
can any of you tell me how to do it.
the question is :
an infinite straight xonductor running along the x-axis carries a current
of 50A in the positive direction. calculate the magnitude and direction of
the magnetic flux and the magnetic field at point (5,4,4).
a second conductor of lenght 0.15m carrying a current of 3a in the same
direction is then placed at (5,4,4), parallel to the first. determine the
magnitude and direction of the magnetic force acting on it?
here is what i have done:
sqrt=square root
r=sqrt(4²+4²)
=sqrt32
B=Uo*I/2*pi*r
=Uo*50/2*pi* sqrt32
=1.77pT
H=B/Uo
=1.4At/m
F=I*L*B
=3*0.15*1.77pT
=796.5nN
i think what i have done is correct so if any of you could help with the
direction i would be grateful
paul