. the magnetic flux through a loop with a normal vector parallel to a uniform magnetic field will change: a) if the loop is replaced by two loops, each of which has half of the area of the original loop. b) if the loop moves at constant velocity without rotation while remaining within the uniform magnetic field. c) if the loop is rotated about an axis through its center and perpendicular to the loop. d) if the loop is rotated about an axis through its center and in the plane of the loop.