In Fig. 29-54, two long straight wires are perpendicular to the page and separated by distance \...

In Fig. 29-54, two long straight wires are
perpendicular to the page and separated
by distance \( d_{1}=0.75 \mathrm{~cm} \). Wire 1 carries
\( 6.5 \) A into the page. What are the
(a) magnitude and (b) direction (into or 20
out of the page) of the current in wire 2 if
the net magnetic field due to the two cur-
rents is zero at point \( P \) located at distance
\( d_{2}=2.50 \mathrm{~cm} \) from wire 2 ? If the current
in wire 2 is then reversed, what are the
(c) size and (d) direction of the net field
at point \( P \) ?