理想变压器在生产、生活实际中有着广泛的应用,它是电磁感应知识的提高和升华,且与电路、电磁场等联系密切.高考对该知识点的考查要求不高、试题难度也不大,多数属于理解相关概念、简单应用规律的要求.一、理想变压器的构造和原理例1一个理想变压器的线圈绕向如图1甲所示.右线圈输入电流i,i-t图象如图1乙所示,第1 s内电流方向如图1甲所示,则下列判断正确的是() Ideal transformer in production, life has a wide range of practical applications, it is the knowledge of electromagnetic induction and sublimation, and with the circuit, electromagnetic field, etc. Close examination of the knowledge point of the examination is not high, the difficulty of the test is not large, the majority Belongs to the understanding of the relevant concepts, the simple application of the law requirements. A, the ideal transformer structure and principle Example 1 an ideal transformer winding direction shown in Figure 1. Right coil input current i, it image shown in Figure 1 B , 1s current direction shown in Figure 1 A, the following judgment is correct ()