Two long, straight, parallel wires are LOO m apart $($Fig$.$ P$28\mathrm{.}63).$ The wire on the left carries a current $I_1$ of $6\mathrm{.}00$ A into the plane of the paper. Use the larger diagram to draw B vectors at each point.

a$.(10$ pts$)$ What must the magnitude and direction of the current $I_2$ be for the net field at point $P$ to be zero?

b$.(10$ pts$)$ Then what are the magnitude and direction of the net field at Q$?$

c$.(10$ pts$)$ Then what is the magnitude of the net field at $S?$ Sketch it showing approximate direction.

d$.($XC $10$ pts$)$ Figure out an exact angle for the net $B$ field vector and show it in diagram. There is an extra diagram on page $13$

Q $$

$I_1=6\mathrm{.}00A$

$P$

$I_2$

Answer A$,$B$,$C$,$D with explanation