(Originais Teachy 2023) - Question Medium of Physics

A laboratory experiment is carried out using a rectangular loop of 30 cm width, 20 cm length, and area A. The loop is positioned in a uniform magnetic field with intensity B = 0.002 T that is perpendicular to the plane of the loop. Initially, the magnetic flux through the loop area is given by the equation Φ = B * A * cosα, where α is the angle between the normal to the loop area and the direction of the magnetic field. (a) Calculate the loop area and the initial magnetic flux through the loop. (b) If the loop is rotated 180° around an axis parallel to the shorter edge of the loop and it took 1 second to complete the rotation, determine the final angle α with respect to the magnetic field and the final magnetic flux through the loop. (c) Calculate the average rate of change of the magnetic flux with respect to time during the 180° rotation and verify if it was constant or varied.