A square loop of wire $($side length $l)$ lies on a table, a distance from a very long straight wire, which carries a current I, as shown in the figure.

a$.$ Find the magnetic flux ${}_B$ through the loop.

b$.$ If someone now pulls the loop directly away from the wire, at speed $v,$ what emf $E$ is generated? In what direction $($clockwise or counterclockwise$)$ does the current flow?

c$.$ What if the loop is pulled to the right at speed $v?$