A $14-$cm diameter circular loop of wire is placed in a $1\mathrm{.}06-$T magnetic field.

a$)$ When the plane of the loop is perpendicular to the field lines, what is the magnetic flux

through the loop?

a$.=30$ mWb

b$.=16$ mWb

c$.=25$ mWb

d$.=12$ mWb

b$)$ The plane of the loop is rotated until it makes a $45$ angle with the field lines, what is the

magnetic flux through the loop at this angle?

a$.=30$ mWb

b$.=16$ mWb

c$.=25$ mWb

d$.=12$ mWb