【正文】
eriment pictured in Fig the horseshou mag is rotated, the moving magic field passing across the copper disk induces eddy currents in the eddy currents are in such a direction as to cause the disk to follow the rotation of the horseshoe the direction of rotation shown in the figure, the eddy cyrrents will be as displayed to Fleming’s righthand rule. Fleming’s righthand rule: Place the thumb and the first and second fingers of the right hand so that all three are mutually the hand in this position,the first finger in pointed in the direction of the field, the thumb is in the direction of motion of the conductor, and the second finger is in the direction of the induced that the relative motion of the conductor is opposite to the direction of rotation of the magic field. By applying Fleming’s lefthand rule, the force on the copper disk is determined to be in the direction of rotation of the mag. Fleming’s lefthand rule: Place the thumb and the first and second fingers of the left hand so that all three are mutually perpe