A square loop of side 1 m and resistance 1 Ω is placed in a magnetic field of 0.5 T. If the plane of loop is perpendicular to the direction of magnetic field, the magnetic flux through the loop is :
(1) zero weber
(2) 2 weber
(3) 0.5 weber
(4) 1 weber
(1) zero weber
(2) 2 weber
(3) 0.5 weber
(4) 1 weber