As illustrated in the figure, a conducting square loop is positioned parallel to the pole-faces of a ring magnet. Each pole-face has an area of 1 cm ^2 , and the magnetic field between the poles is 0.10 T . All of the wires forming the loop are situated completely outside the magnetic field. Determine the average emf induced in the loop if the magnet is withdrawn in 1.0 s .

Step-by-step solution

Given: Magnetic field between the poles, B = 0.10 T Area of each pole-face, A = 1 cm ^2 = 10⁻⁴ m ^2 Time taken to withdraw the magnet, t = 1.0 s Since all the wires of the loop are outside the magnetic field, the magnetic flux passes only through the region between the pole-faces. The plane of the loop is parallel to the pole-faces, so the magnetic field is perpendicular to the plane of the loop. The initial magnetic flux linked with the loop is: _i = B A = 0.10 10⁻⁴ = 10⁻⁵ Wb When the magnet is completely withdraw