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在人教版高中物理选修3-2中,关于单匝矩形线圈在匀强磁场中绕垂直于磁场的轴匀速转动产生的交变电流电动势的表达式是这样阐述的:“根据法拉第电磁感应定律可以导出,它的电动势e随时间的变化规律为e=E_m sinωt,式中E_m是个常数,表示电动势可能达到的最大值,叫做电动势的峰值,ω是发电机线圈转动的角速度。”由于没有给出具体的推导方法,所以给了教师和学生较大的空间。
In People’s Education High School Physics Elective 3-2, the expression of the alternating current electromotive force generated by a uniform rotation of a single-turn rectangular coil in a uniform magnetic field about an axis perpendicular to the magnetic field is set forth as follows: "According to Faraday’s electromagnetic induction The law can be derived, its electromotive force e changes with time as e = E_m sinωt, where E_m is a constant, which means that the electromotive force may reach the maximum value, called the peak electromotive force, ω is the angular velocity of the generator coil rotation. Did not give a specific method of derivation, so give teachers and students a lot of space.