Variation Of Closed Loop in Uniform Magnetic Field

A uniform magnetic field is provided, the direction of the magnetic field line is perpendicular to the downward, only a part of the closed loop is in the magnetic field at the beginning, and then the loop is moved to the left, and there is an induced current in the loop, and the opposite induced current appears in the loop. If a very small closed loop is used to move in the magnetic field, and so that it does not leave the uniform area of the magnetic field during the entire movement, then there is no induced current generated in this coil. If the closed loop is rotated around an axis perpendicular to the magnetic field, there is also an induced current generated in the loop, the direction of which is related to the rotation.